I don't have that problem - it works flawlessly all the time. I am using Amazon basics HDMI cable connected via HDMI switcher to the external display (with the

I don't have that problem - it works flawlessly all the time. I am using Amazon basics HDMI cable connected via HDMI switcher to the external display (with the desktop, Chromecast and Tronsmart Android stick occupying 3 more HDMI inputs). Try perhaps another HDMI cable?