Thank you for the quick response. I did nothing out of the ordinary, but I should note that the insane RAM usage was only noticed today. I hadn’t checked task manager all the other (very frequent) times that Shotcut lagged/froze. It likely is the same problem but I’m not sure.
What I did was import a 500MB mp4, import a 54MB WAV file (both drag&drop), add a fade in for both and cut a bit of the beginning. Even while trying to fade in and cut, it was unbearably slow until I eventually pressed play and zoomed out and it froze for minutes.
Right now it’s at 5.3GB RAM usage. Less but still abnormal.
I’ll be happy to give any additional info, sorry for not knowing straight up what to include.