I've been editing multi cameras in the beginning of the year with premiere flawlessly.
I have a Ryzen 12core, RTX 3070 64gb ram, pci express ssd on windows 11, so quite a fast system.
My multi cam exists of 3 cameras. two that record in mp4 and one in proress.
I always speed up while going through the footage.
If i roll back to version 15 of premiere everything works like a charm, no stutters, smooth and respônsive.
If i open the new V22 of premiere it takes ages to load the file, then another 30 seconds before i can press play, then after playing a second the video freezes but audio and timeline keep on playing. after waiting this out i can normally edit but when i fast forward the two sources of the mp4 video's in my multi cam are flickering and stuttering..
I have the latest drivers, GPU acceleration is turned on, if turned off it plays back at half the frames per second.. which is also weird with a processor like mine..
Overall, im not sure whats wrong here but on the new version i can not edit at the moment.