diff --git a/src/helpers/ui/E213Display.cpp b/src/helpers/ui/E213Display.cpp
index a0e71f31aa..814693a06b 100644
--- a/src/helpers/ui/E213Display.cpp
+++ b/src/helpers/ui/E213Display.cpp
@@ -59,44 +59,58 @@ bool E213Display::begin() {
 }
 
 void E213Display::powerOn() {
+  if (_periph_power) {
+    _periph_power->claim();
+  } else {
 #ifdef PIN_VEXT_EN
-  pinMode(PIN_VEXT_EN, OUTPUT);
+    pinMode(PIN_VEXT_EN, OUTPUT);
 #ifdef PIN_VEXT_EN_ACTIVE
-  digitalWrite(PIN_VEXT_EN, PIN_VEXT_EN_ACTIVE); 
+    digitalWrite(PIN_VEXT_EN, PIN_VEXT_EN_ACTIVE);
 #else
-  digitalWrite(PIN_VEXT_EN, LOW); // Active low
+    digitalWrite(PIN_VEXT_EN, LOW); // Active low
 #endif
-  delay(50);                      // Allow power to stabilize
 #endif
+  }
+  delay(50);                      // Allow power to stabilize
 }
 
 void E213Display::powerOff() {
+  if (_periph_power) {
+    _periph_power->release();
+  } else {
 #ifdef PIN_VEXT_EN
 #ifdef PIN_VEXT_EN_ACTIVE
-  digitalWrite(PIN_VEXT_EN, !PIN_VEXT_EN_ACTIVE); 
+    digitalWrite(PIN_VEXT_EN, !PIN_VEXT_EN_ACTIVE);
 #else
-  digitalWrite(PIN_VEXT_EN, HIGH); // Turn off power
+    digitalWrite(PIN_VEXT_EN, HIGH); // Turn off power
 #endif
 #endif
+  }
 }
 
 void E213Display::turnOn() {
   if (!_init) begin();
-  powerOn();
+  else if (!_isOn) {
+    powerOn();
+    display->fastmodeOn();  // Reinitialize display controller after power was cut
+  }
   _isOn = true;
 }
 
 void E213Display::turnOff() {
-  powerOff();
-  _isOn = false;
+  if (_isOn) {
+    powerOff();
+    _isOn = false;
+  }
 }
 
 void E213Display::clear() {
   display->clear();
-
 }
 
 void E213Display::startFrame(Color bkg) {
+  display_crc.reset();
+
   // Fill screen with white first to ensure clean background
   display->fillRect(0, 0, width(), height(), WHITE);
 
@@ -107,31 +121,50 @@ void E213Display::startFrame(Color bkg) {
 }
 
 void E213Display::setTextSize(int sz) {
+  display_crc.update<int>(sz);
   // The library handles text size internally
     display->setTextSize(sz);
 }
 
 void E213Display::setColor(Color c) {
+  display_crc.update<Color>(c);
   // implemented in individual display methods
 }
 
 void E213Display::setCursor(int x, int y) {
+  display_crc.update<int>(x);
+  display_crc.update<int>(y);
     display->setCursor(x, y);
 }
 
 void E213Display::print(const char *str) {
+  display_crc.update<char>(str, strlen(str));
     display->print(str);
 }
 
 void E213Display::fillRect(int x, int y, int w, int h) {
+  display_crc.update<int>(x);
+  display_crc.update<int>(y);
+  display_crc.update<int>(w);
+  display_crc.update<int>(h);
     display->fillRect(x, y, w, h, BLACK);
 }
 
 void E213Display::drawRect(int x, int y, int w, int h) {
+  display_crc.update<int>(x);
+  display_crc.update<int>(y);
+  display_crc.update<int>(w);
+  display_crc.update<int>(h);
     display->drawRect(x, y, w, h, BLACK);
 }
 
 void E213Display::drawXbm(int x, int y, const uint8_t *bits, int w, int h) {
+  display_crc.update<int>(x);
+  display_crc.update<int>(y);
+  display_crc.update<int>(w);
+  display_crc.update<int>(h);
+  display_crc.update<uint8_t>(bits, w * h / 8);
+
   // Width in bytes for bitmap processing
   uint16_t widthInBytes = (w + 7) / 8;
 
@@ -160,5 +193,9 @@ uint16_t E213Display::getTextWidth(const char *str) {
 }
 
 void E213Display::endFrame() {
+  uint32_t crc = display_crc.finalize();
+  if (crc != last_display_crc_value) {
     display->update();
+    last_display_crc_value = crc;
+  }
 }
diff --git a/src/helpers/ui/E213Display.h b/src/helpers/ui/E213Display.h
index 657bfb4c7e..420792c8a3 100644
--- a/src/helpers/ui/E213Display.h
+++ b/src/helpers/ui/E213Display.h
@@ -5,15 +5,20 @@
 #include <SPI.h>
 #include <Wire.h>
 #include <heltec-eink-modules.h>
+#include <CRC32.h>
+#include <helpers/RefCountedDigitalPin.h>
 
 // Display driver for E213 e-ink display
 class E213Display : public DisplayDriver {
   BaseDisplay* display=NULL;
   bool _init = false;
   bool _isOn = false;
+  RefCountedDigitalPin* _periph_power;
+  CRC32 display_crc;
+  uint32_t last_display_crc_value = 0;
 
 public:
-  E213Display() : DisplayDriver(250, 122) {}
+  E213Display(RefCountedDigitalPin* periph_power = NULL) : DisplayDriver(250, 122), _periph_power(periph_power) {}
   ~E213Display(){
     if(display!=NULL) {
       delete display;
@@ -39,4 +44,4 @@ class E213Display : public DisplayDriver {
   BaseDisplay* detectEInk();
   void powerOn();
   void powerOff();
-};
\ No newline at end of file
+};
diff --git a/src/helpers/ui/E290Display.cpp b/src/helpers/ui/E290Display.cpp
index 23ff2d9532..ef4df05ed7 100644
--- a/src/helpers/ui/E290Display.cpp
+++ b/src/helpers/ui/E290Display.cpp
@@ -21,28 +21,41 @@ bool E290Display::begin() {
 }
 
 void E290Display::powerOn() {
+  if (_periph_power) {
+    _periph_power->claim();
+  } else {
 #ifdef PIN_VEXT_EN
-  pinMode(PIN_VEXT_EN, OUTPUT);
-  digitalWrite(PIN_VEXT_EN, PIN_VEXT_EN_ACTIVE);
-  delay(50);                      // Allow power to stabilize
+    pinMode(PIN_VEXT_EN, OUTPUT);
+    digitalWrite(PIN_VEXT_EN, PIN_VEXT_EN_ACTIVE);
 #endif
+  }
+  delay(50);                      // Allow power to stabilize
 }
 
 void E290Display::powerOff() {
+  if (_periph_power) {
+    _periph_power->release();
+  } else {
 #ifdef PIN_VEXT_EN
-  digitalWrite(PIN_VEXT_EN, !PIN_VEXT_EN_ACTIVE); // Turn off power
+    digitalWrite(PIN_VEXT_EN, !PIN_VEXT_EN_ACTIVE); // Turn off power
 #endif
+  }
 }
 
 void E290Display::turnOn() {
   if (!_init) begin();
-  powerOn();
+  else if (!_isOn) {
+    powerOn();
+    display.fastmodeOn();  // Reinitialize display controller after power was cut
+  }
   _isOn = true;
 }
 
 void E290Display::turnOff() {
-  powerOff();
-  _isOn = false;
+  if (_isOn) {
+    powerOff();
+    _isOn = false;
+  }
 }
 
 void E290Display::clear() {
@@ -50,6 +63,8 @@ void E290Display::clear() {
 }
 
 void E290Display::startFrame(Color bkg) {
+  display_crc.reset();
+
   // Fill screen with white first to ensure clean background
   display.fillRect(0, 0, width(), height(), WHITE);
   if (bkg == LIGHT) {
@@ -59,31 +74,50 @@ void E290Display::startFrame(Color bkg) {
 }
 
 void E290Display::setTextSize(int sz) {
+  display_crc.update<int>(sz);
   // The library handles text size internally
   display.setTextSize(sz);
 }
 
 void E290Display::setColor(Color c) {
+  display_crc.update<Color>(c);
   // implemented in individual display methods
 }
 
 void E290Display::setCursor(int x, int y) {
+  display_crc.update<int>(x);
+  display_crc.update<int>(y);
   display.setCursor(x, y);
 }
 
 void E290Display::print(const char *str) {
+  display_crc.update<char>(str, strlen(str));
   display.print(str);
 }
 
 void E290Display::fillRect(int x, int y, int w, int h) {
+  display_crc.update<int>(x);
+  display_crc.update<int>(y);
+  display_crc.update<int>(w);
+  display_crc.update<int>(h);
   display.fillRect(x, y, w, h, BLACK);
 }
 
 void E290Display::drawRect(int x, int y, int w, int h) {
+  display_crc.update<int>(x);
+  display_crc.update<int>(y);
+  display_crc.update<int>(w);
+  display_crc.update<int>(h);
   display.drawRect(x, y, w, h, BLACK);
 }
 
 void E290Display::drawXbm(int x, int y, const uint8_t *bits, int w, int h) {
+  display_crc.update<int>(x);
+  display_crc.update<int>(y);
+  display_crc.update<int>(w);
+  display_crc.update<int>(h);
+  display_crc.update<uint8_t>(bits, w * h / 8);
+
   // Width in bytes for bitmap processing
   uint16_t widthInBytes = (w + 7) / 8;
 
@@ -112,5 +146,9 @@ uint16_t E290Display::getTextWidth(const char *str) {
 }
 
 void E290Display::endFrame() {
-  display.update();
+  uint32_t crc = display_crc.finalize();
+  if (crc != last_display_crc_value) {
+    display.update();
+    last_display_crc_value = crc;
+  }
 }
diff --git a/src/helpers/ui/E290Display.h b/src/helpers/ui/E290Display.h
index 16f4538223..2ca50225d1 100644
--- a/src/helpers/ui/E290Display.h
+++ b/src/helpers/ui/E290Display.h
@@ -5,15 +5,20 @@
 #include <SPI.h>
 #include <Wire.h>
 #include <heltec-eink-modules.h>
+#include <CRC32.h>
+#include <helpers/RefCountedDigitalPin.h>
 
 // Display driver for E290 e-ink display
 class E290Display : public DisplayDriver {
   EInkDisplay_VisionMasterE290 display;
   bool _init = false;
   bool _isOn = false;
+  RefCountedDigitalPin* _periph_power;
+  CRC32 display_crc;
+  uint32_t last_display_crc_value = 0;
 
 public:
-  E290Display() : DisplayDriver(296, 128) {}
+  E290Display(RefCountedDigitalPin* periph_power = NULL) : DisplayDriver(296, 128), _periph_power(periph_power) {}
 
   bool begin();
   bool isOn() override { return _isOn; }
@@ -34,4 +39,4 @@ class E290Display : public DisplayDriver {
 private:
   void powerOn();
   void powerOff();
-};
\ No newline at end of file
+};
diff --git a/variants/heltec_e213/platformio.ini b/variants/heltec_e213/platformio.ini
index caba3a30e0..63bf6d9b38 100644
--- a/variants/heltec_e213/platformio.ini
+++ b/variants/heltec_e213/platformio.ini
@@ -40,7 +40,7 @@ lib_deps =
   ${esp32_base.lib_deps}
   https://github.com/Quency-D/heltec-eink-modules/archive/563dd41fd850a1bc3039b8723da4f3a20fe1c800.zip
 
-[env:Heltec_E213_companion_radio_ble_]
+[env:Heltec_E213_companion_radio_ble]
 extends = Heltec_E213_base
 build_flags =
   ${Heltec_E213_base.build_flags}
@@ -48,6 +48,7 @@ build_flags =
   -D MAX_CONTACTS=350
   -D MAX_GROUP_CHANNELS=40
   -D DISPLAY_CLASS=E213Display
+  -D AUTO_OFF_MILLIS=0
   -D BLE_PIN_CODE=123456   ; dynamic, random PIN
   -D BLE_DEBUG_LOGGING=1
   -D OFFLINE_QUEUE_SIZE=256
@@ -59,8 +60,9 @@ build_src_filter = ${Heltec_E213_base.build_src_filter}
 lib_deps =
   ${Heltec_E213_base.lib_deps}
   densaugeo/base64 @ ~1.4.0
+  bakercp/CRC32 @ ^2.0.0
 
-[env:Heltec_E213_companion_radio_usb_]
+[env:Heltec_E213_companion_radio_usb]
 extends = Heltec_E213_base
 build_flags =
   ${Heltec_E213_base.build_flags}
@@ -68,6 +70,7 @@ build_flags =
   -D MAX_CONTACTS=350
   -D MAX_GROUP_CHANNELS=40
   -D DISPLAY_CLASS=E213Display
+  -D AUTO_OFF_MILLIS=0
   -D OFFLINE_QUEUE_SIZE=256
 build_src_filter = ${Heltec_E213_base.build_src_filter}
   +<helpers/ui/E213Display.cpp>
@@ -77,8 +80,9 @@ build_src_filter = ${Heltec_E213_base.build_src_filter}
 lib_deps =
   ${Heltec_E213_base.lib_deps}
   densaugeo/base64 @ ~1.4.0
+  bakercp/CRC32 @ ^2.0.0
 
-[env:Heltec_E213_repeater_]
+[env:Heltec_E213_repeater]
 extends = Heltec_E213_base
 build_flags =
   ${Heltec_E213_base.build_flags}
@@ -94,8 +98,9 @@ build_src_filter = ${Heltec_E213_base.build_src_filter}
 lib_deps =
   ${Heltec_E213_base.lib_deps}
   ${esp32_ota.lib_deps}
+  bakercp/CRC32 @ ^2.0.0
 
-; [env:Heltec_E213_repeater_bridge_rs232_]
+; [env:Heltec_E213_repeater_bridge_rs232]
 ; extends = Heltec_E213_base
 ; build_flags =
 ;   ${Heltec_E213_base.build_flags}
@@ -118,8 +123,9 @@ lib_deps =
 ; lib_deps =
 ;   ${Heltec_E213_base.lib_deps}
 ;   ${esp32_ota.lib_deps}
+;   bakercp/CRC32 @ ^2.0.0
 
-[env:Heltec_E213_repeater_bridge_espnow_]
+[env:Heltec_E213_repeater_bridge_espnow]
 extends = Heltec_E213_base
 build_flags =
   ${Heltec_E213_base.build_flags}
@@ -140,8 +146,9 @@ build_src_filter = ${Heltec_E213_base.build_src_filter}
 lib_deps =
   ${Heltec_E213_base.lib_deps}
   ${esp32_ota.lib_deps}
+  bakercp/CRC32 @ ^2.0.0
 
-[env:Heltec_E213_room_server_]
+[env:Heltec_E213_room_server]
 extends = Heltec_E213_base
 build_flags =
   ${Heltec_E213_base.build_flags}
@@ -157,3 +164,4 @@ build_src_filter = ${Heltec_E213_base.build_src_filter}
 lib_deps =
   ${Heltec_E213_base.lib_deps}
   ${esp32_ota.lib_deps}
+  bakercp/CRC32 @ ^2.0.0
diff --git a/variants/heltec_e213/target.cpp b/variants/heltec_e213/target.cpp
index c9233431cb..69c832fc6b 100644
--- a/variants/heltec_e213/target.cpp
+++ b/variants/heltec_e213/target.cpp
@@ -18,7 +18,7 @@ AutoDiscoverRTCClock rtc_clock(fallback_clock);
 SensorManager sensors;
 
 #ifdef DISPLAY_CLASS
-DISPLAY_CLASS display;
+DISPLAY_CLASS display(&board.periph_power);
 MomentaryButton user_btn(PIN_USER_BTN, 1000, true);
 #endif
 
diff --git a/variants/heltec_e290/HeltecE290Board.h b/variants/heltec_e290/HeltecE290Board.h
index ff16e273a7..645ec3481a 100644
--- a/variants/heltec_e290/HeltecE290Board.h
+++ b/variants/heltec_e290/HeltecE290Board.h
@@ -10,7 +10,7 @@ class HeltecE290Board : public ESP32Board {
 public:
   RefCountedDigitalPin periph_power;
 
-  HeltecE290Board() : periph_power(PIN_VEXT_EN) { }
+  HeltecE290Board() : periph_power(PIN_VEXT_EN, PIN_VEXT_EN_ACTIVE) { }
 
   void begin();
   void enterDeepSleep(uint32_t secs, int pin_wake_btn = -1);
diff --git a/variants/heltec_e290/platformio.ini b/variants/heltec_e290/platformio.ini
index 0c07c592c4..2681048c2f 100644
--- a/variants/heltec_e290/platformio.ini
+++ b/variants/heltec_e290/platformio.ini
@@ -34,7 +34,7 @@ lib_deps =
   ${esp32_base.lib_deps}
   https://github.com/Quency-D/heltec-eink-modules/archive/563dd41fd850a1bc3039b8723da4f3a20fe1c800.zip
 
-[env:Heltec_E290_companion_ble_]
+[env:Heltec_E290_companion_ble]
 extends = Heltec_E290_base
 build_flags =
   ${Heltec_E290_base.build_flags}
@@ -42,6 +42,7 @@ build_flags =
   -D MAX_CONTACTS=350
   -D MAX_GROUP_CHANNELS=40
   -D DISPLAY_CLASS=E290Display
+  -D AUTO_OFF_MILLIS=0
   -D BLE_PIN_CODE=123456   ; dynamic, random PIN
   -D BLE_DEBUG_LOGGING=1
   -D OFFLINE_QUEUE_SIZE=256
@@ -53,8 +54,9 @@ build_src_filter = ${Heltec_E290_base.build_src_filter}
 lib_deps =
   ${Heltec_E290_base.lib_deps}
   densaugeo/base64 @ ~1.4.0
+  bakercp/CRC32 @ ^2.0.0
 
-[env:Heltec_E290_companion_usb_]
+[env:Heltec_E290_companion_usb]
 extends = Heltec_E290_base
 build_flags =
   ${Heltec_E290_base.build_flags}
@@ -62,6 +64,7 @@ build_flags =
   -D MAX_CONTACTS=350
   -D MAX_GROUP_CHANNELS=40
   -D DISPLAY_CLASS=E290Display
+  -D AUTO_OFF_MILLIS=0
   -D BLE_PIN_CODE=123456   ; dynamic, random PIN
   -D BLE_DEBUG_LOGGING=1
   -D OFFLINE_QUEUE_SIZE=256
@@ -73,8 +76,9 @@ build_src_filter = ${Heltec_E290_base.build_src_filter}
 lib_deps =
   ${Heltec_E290_base.lib_deps}
   densaugeo/base64 @ ~1.4.0
+  bakercp/CRC32 @ ^2.0.0
 
-[env:Heltec_E290_repeater_]
+[env:Heltec_E290_repeater]
 extends = Heltec_E290_base
 build_flags =
   ${Heltec_E290_base.build_flags}
@@ -90,8 +94,9 @@ build_src_filter = ${Heltec_E290_base.build_src_filter}
 lib_deps =
   ${Heltec_E290_base.lib_deps}
   ${esp32_ota.lib_deps}
+  bakercp/CRC32 @ ^2.0.0
 
-; [env:Heltec_E290_repeater_bridge_rs232_]
+; [env:Heltec_E290_repeater_bridge_rs232]
 ; extends = Heltec_E290_base
 ; build_flags =
 ;   ${Heltec_E290_base.build_flags}
@@ -114,8 +119,9 @@ lib_deps =
 ; lib_deps =
 ;   ${Heltec_E290_base.lib_deps}
 ;   ${esp32_ota.lib_deps}
+;   bakercp/CRC32 @ ^2.0.0
 
-[env:Heltec_E290_repeater_bridge_espnow_]
+[env:Heltec_E290_repeater_bridge_espnow]
 extends = Heltec_E290_base
 build_flags =
   ${Heltec_E290_base.build_flags}
@@ -136,8 +142,9 @@ build_src_filter = ${Heltec_E290_base.build_src_filter}
 lib_deps =
   ${Heltec_E290_base.lib_deps}
   ${esp32_ota.lib_deps}
+  bakercp/CRC32 @ ^2.0.0
 
-[env:Heltec_E290_room_server_]
+[env:Heltec_E290_room_server]
 extends = Heltec_E290_base
 build_flags =
   ${Heltec_E290_base.build_flags}
@@ -153,3 +160,4 @@ build_src_filter = ${Heltec_E290_base.build_src_filter}
 lib_deps =
   ${Heltec_E290_base.lib_deps}
   ${esp32_ota.lib_deps}
+  bakercp/CRC32 @ ^2.0.0
diff --git a/variants/heltec_e290/target.cpp b/variants/heltec_e290/target.cpp
index b0c9630cf2..c2220b159b 100644
--- a/variants/heltec_e290/target.cpp
+++ b/variants/heltec_e290/target.cpp
@@ -18,7 +18,7 @@ AutoDiscoverRTCClock rtc_clock(fallback_clock);
 SensorManager sensors;
 
 #ifdef DISPLAY_CLASS
-DISPLAY_CLASS display;
+DISPLAY_CLASS display(&board.periph_power);
 MomentaryButton user_btn(PIN_USER_BTN, 1000, true);
 #endif
 
diff --git a/variants/heltec_wireless_paper/platformio.ini b/variants/heltec_wireless_paper/platformio.ini
index f0bca86047..b4a5b58da7 100644
--- a/variants/heltec_wireless_paper/platformio.ini
+++ b/variants/heltec_wireless_paper/platformio.ini
@@ -60,6 +60,7 @@ build_src_filter = ${Heltec_Wireless_Paper_base.build_src_filter}
 lib_deps =
   ${Heltec_Wireless_Paper_base.lib_deps}
   densaugeo/base64 @ ~1.4.0
+  bakercp/CRC32 @ ^2.0.0
 
 [env:Heltec_Wireless_Paper_repeater]
 extends = Heltec_Wireless_Paper_base
@@ -77,6 +78,7 @@ build_src_filter = ${Heltec_Wireless_Paper_base.build_src_filter}
 lib_deps =
   ${Heltec_Wireless_Paper_base.lib_deps}
   ${esp32_ota.lib_deps}
+  bakercp/CRC32 @ ^2.0.0
 
 ; [env:Heltec_Wireless_Paper_repeater_bridge_rs232]
 ; extends = Heltec_Wireless_Paper_base
@@ -123,6 +125,7 @@ build_src_filter = ${Heltec_Wireless_Paper_base.build_src_filter}
 lib_deps =
   ${Heltec_Wireless_Paper_base.lib_deps}
   ${esp32_ota.lib_deps}
+  bakercp/CRC32 @ ^2.0.0
 
 [env:Heltec_Wireless_Paper_room_server]
 extends = Heltec_Wireless_Paper_base
@@ -140,3 +143,4 @@ build_src_filter = ${Heltec_Wireless_Paper_base.build_src_filter}
 lib_deps =
   ${Heltec_Wireless_Paper_base.lib_deps}
   ${esp32_ota.lib_deps}
+  bakercp/CRC32 @ ^2.0.0