Firefox Picture-in-Picture (PIP) - Video usually freezes and sometimes crashes

I frequently use PIP because I like to play games while watching something in the background. I don't know exactly when this issue started. When I click on another application, the video will just freeze, while the audio will still work. Imagine like a still image with some music playing. Sometimes PIP works but then will just freeze the video and audio for about 10 seconds and then close, and the video I'm watching will begin playing on YouTube again (without PIP). I've tried looking up some solutions here, even tried disabling hardware acceleration but nothing worked. I've also noticed that this question is similar to another thread made by user jablka 3 years ago. I've tried their solution and nothing changed. Any advice? Thanks in advance.