HI DancingDirty7, Which screen is tearing? The tv screen or the computer?

There are two settings that we can check in order to create a work around. One, open up the options menu > Go to Advanced > then uncheck scrolling acceleration. Restart the browser and reconnect the computer to the tv. This will reset the display.

Please also make sure that your graphics driver is up to date:

Upgrade your graphics drivers to use hardware acceleration and WebGL

the PC is connected to TV always

Well amd drivers for vista are not updated so there might be the problem. anyways I switched to another OS in the same PC and it doesn't screen tear, thanks for the answer

the scrolling acceleration I thought of myself after I switched OS.