Updated to Catalina, now problems with FCPX
I was forced to update to Catalina 10.15 yesterday in order to continue using FCPX 10.4.7 -- now clips are randomly pixellating in my timeline AND in my exported videos; I tried restarting and re-exporting three times, and each version of the video is pixellating and superimposing frames of one clip over another at different times; I have no control over when this happens in the finished product. I've also tried editing from two different memory cards so I know it's not that. I am a video producer so this is affecting my livelihood!! Please help if there's a way. Thank you!!
iMac 27" 5K, macOS 10.15