Quicktime Screen Recording freezing during playback.
I've been using QuickTime to record video of me playing video games for a while. Every so often, when I end the recording, I'll receive a message that says "Your recording could not be saved." And while the recording does save, it will freeze up halfway through the playback. For some reason the audio continues, but the video will freeze and not continue. Furthermore, this only happens with certain recordings, about 20% of the time. I have tried bringing it into editing softwares and rendering it, I have tried file fixing programs, and I have tried converting it into a different file format, none of which worked. I can only conclude that the issue must be with my computer or my QuickTime program. My computer is a Late 2012 21.5" iMac, Running macOS Catalina with 8GB of DDR3 RAM and a 2.7GHz Quad-Core Intel i5. I hope someone can help me out with this issue!
iMac 21.5″, macOS 10.15