Strange cut while watching videos


Here is a photo of the problem. Any time I watch some sort of video or stream I get this cut (it happens in Youtube, Twitch or any video platform) I circled the spot but if you look closely there is a line above the middle one too.(Btw it’s not my monitors problem because it’s not happening in any other browser only in Brave) Would really love to know if it is fixable in settings or is this problem from Brave itself.
Thank you.