diff --git a/NeoPixelBus.cpp b/NeoPixelBus.cpp
index cd67645..ffc777f 100644
--- a/NeoPixelBus.cpp
+++ b/NeoPixelBus.cpp
@@ -74,39 +74,41 @@ void NeoPixelBus::Begin(void)
 }
 
 #if defined(ESP8266)
-#pragma optimize( "", off )
 
-void send_ws_0_800(uint8_t gpio) {
+void ICACHE_FLASH_ATTR send_ws_0_800(uint8_t gpio) {
     uint8_t i;
     i = 4; while (i--) GPIO_REG_WRITE(GPIO_OUT_W1TS_ADDRESS, 1 << gpio);
-    i = 6; while (i--) GPIO_REG_WRITE(GPIO_OUT_W1TC_ADDRESS, 1 << gpio);
+    i = 7; while (i--) GPIO_REG_WRITE(GPIO_OUT_W1TC_ADDRESS, 1 << gpio);
 }
 
-void send_ws_1_800(uint8_t gpio) {
+void ICACHE_FLASH_ATTR send_ws_1_800(uint8_t gpio) {
     uint8_t i;
     i = 9; while (i--) GPIO_REG_WRITE(GPIO_OUT_W1TS_ADDRESS, 1 << gpio);
     i = 2; while (i--) GPIO_REG_WRITE(GPIO_OUT_W1TC_ADDRESS, 1 << gpio);
 }
 
-void send_ws_0_400(uint8_t gpio) {
+void ICACHE_FLASH_ATTR send_ws_0_400(uint8_t gpio) {
     uint8_t i;
     i = 8; while (i--) GPIO_REG_WRITE(GPIO_OUT_W1TS_ADDRESS, 1 << gpio);
     i = 12; while (i--) GPIO_REG_WRITE(GPIO_OUT_W1TC_ADDRESS, 1 << gpio);
 }
 
-void send_ws_1_400(uint8_t gpio) {
+void ICACHE_FLASH_ATTR send_ws_1_400(uint8_t gpio) {
     uint8_t i;
     i = 18; while (i--) GPIO_REG_WRITE(GPIO_OUT_W1TS_ADDRESS, 1 << gpio);
     i = 4; while (i--) GPIO_REG_WRITE(GPIO_OUT_W1TC_ADDRESS, 1 << gpio);
 }
-#pragma optimize( "", on )
+
 #endif
 
 
 #if defined(ESP8266)
-#pragma optimize( "", off )
-#endif
+
+void ICACHE_FLASH_ATTR NeoPixelBus::Show(void)
+
+#else
 void NeoPixelBus::Show(void) 
+#endif
 {
     if (!_pixels) 
         return;