Leave fullscreen and tell me how it goes.
Mine had the same problem in fullscreen. Ran things in windowed and those issues vanished.
As far as youtube and watching streams goes, disable hardware acceleration in Chrome/your browser.
ok, thanks i will try this
all video played a very slowly! I want to watch a video in 4k, but i can not do this else disable hardware acceleration !
System: Desktop with Win 10
Motherboard: Asrock AB350M HDV Bios version 4.4
CPU/GPU: Ryzen 3 2200G
Ram: DDR4 , 2 x 4gb
what is your monitor and connection to it?