[PROBLEM] Struggling with 5 inch HDMI touch screen

[WilhelmT]

Thanks for the pointers, Tim.

I was wrong, the resolution for MoOde is just 800x480, so this is not the problem.
Still, the performance with the suggested additions to the config.txt is pretty poor. Touch delay is about 3 seconds. Screen delay is between 5 and 30 seconds.
For Vanilla RPi OS Bookwork, without any changes to config.txt and not installing any drivers as is suggested on lcdwiki.com, the performance is great.