Hi I am rapidly learning my way through the emWIN system, with good results so far. I am using a STM32F7 device running at 216MHz, with a 320,240 RGB888 display on the integrated LTDC. The system is set up as a COLOR_MODE_RGB888 with only 1 layer. I have noticed that if the rotation is set to ROTATION_180 (or in fact CW or CCW), then the GUI_DrawBitmap() function completes (visually) instantly If the rotation is set to ROTATION_0 then the GUI_DrawBitmap takes a visually obvious time as it is dra…