Maybe it is the "hardware acceleration" yes, I use Microsoft Outlook and Google Chrome and both use hardware acceleration.
Sometimes, when I use ALT+TAB, my screen does not response and becomes black one or two seconds before to comes back ok.
I use last Intel graphic driver and from some months, I no longer have issue with Zoom or other video application like at the beginning but I am using a USB-C to DisplayPort cable, I have to retry the USB-C to USB-C graphic cable to check if my issue with video application is always present or not.
My issues:
- Screen does not response, become black and come back up
- With application video (Zoom, VLC with DirectX output) artefacts and flickering
Fixes / Workarounds :
- Use last Intel Graphic driver
- Use USB-C to DisplayPort cable instead of USB-C to USB-C cable
- Disable/Enable DisplayPort 1.2 in screen configuration (Daisy Chain)
- Configure laptop to use the power mode "best performance"
- Disable hardware acceleration in Windows 10 or Outlook/Chrome/...