Question Tearing with freesync on full screen videos

Does it work

Reputable
Jun 3, 2017
222
34
4,640
Have KG251QF, 144hz freesync monitor. Freesync is enabled on the monitor and on the 5700xt through the Raedon Overlay, yet when in fullscreen on videos in web browers (tried multiple browsers, tried both hardware acceleration on and off in chrome also), this tearing only occurs when videos are fullscreen on browsers, I have the newest gpu drivers also.

As a bonus question, the screen will sometimes go black for a few seconds, I feel this one is due to stability of cpu though, (even though boost clock is supposed to be 4.2, using it never ends well so I clocked it to 4), happens far less frequently at 4 (Usually when i open a game for the first time since boot), but still happens occasionally, its ryzen 5 3600, any ideas?