GxEPD2 - Detailed analysis of fast partial update speed of 1.54 Waveshare

Other Hardware Displays
4

GxEPD2_154.h that's why:

    static const uint16_t power_on_time = 80; // ms, e.g. 73508us
    static const uint16_t power_off_time = 80; // ms, e.g. 68982us
    static const uint16_t full_refresh_time = 1200; // ms, e.g. 1113273us
    static const uint16_t partial_refresh_time = 300; // ms, e.g. 290867us