Unable to Playback All Footage since updating to 2023 app
I updated Adobe Premiere Pro to the 2023 version last week. (As a side note: It asked me to update the app via an in-app pop up, rather than through Creative Cloud, which I had not experienced before. Unfortunately I didn't pay close attention to the language of the pop up so I am not sure if it said anything unusual.)
As soon as I opened the updated app, neither old projects or new projects show video playback. This is for any kind of footage I've tried and in all playback windows. While I can hear the audio tracks clearly, instead of showing video, it displays a green flickering screen (see attached image).
My plan is to uninstall and try to go back to the 2022 version but if anyone has any idea what has caused this, I'd be grateful for advice.
Specs: macOS Big Sur, 11.6.7 on a MacBook pro 2014. Processor 2,5 GHz Quad-Core Intel Core i7. Memory 16 GB 1600 MHz DDR3. 53 Gb space available in storage. I have never had issues running Premiere on this laptop in the past.

