I'm live booting Zorin 16 Core and I'm seeing an issue with fractional scaling. When you try to play a local video file (not streaming in browser) in fullscreen mode the audio keeps playing but the screen turns black for about 3-5 seconds. Then the video plays for a few seconds before the screen turns black again, repeating over and over until you exit fullscreen mode or kill the program. The problem does not occur when using the non-fractional scaling.
I've been able to replicate the issue on two different systems, one with a 4K monitor and anther with an HD monitor. My video player of choice is VLC but I tried 6 or 7 other video players found in the repository and they all have the same issue. However, SMPlayer managed to work normally for about 1-2 minutes before the problem manifested itself.
I'm currently using Solus (Budgie) but I'm tired of having to choose between 100% and 200% scaling, leaving everything looking either too small or too large on my 4K monitor. And yes, I have messed around with changing the font size, I don't like the look.
I'd like to switch to Zorin for the fractional scaling option but if I can't watch a video properly then it's a deal-breaker for me.