When I'm editing, the interface gets increasingly slower over time. After two or more hours it gets so slow that I sometimes drag panels or clips inadvertently because the software doesn't register that I clicked elsewhere quickly enough. Also scrolling through clips in the timeline (by moving the playhead around with the mouse) gets very choppy. Playing back the timeline is not affected. It's all smooth when I've just launched Premiere. I need to restart the software every 1 to 2 hours te be able to work smoothly.
Sometimes in the Source panel I'm unable to start and stop play by using the space bar or setting in- and out-points by pressing i and o. It still works when I use the buttons in the panel. That happens less frequently, but is always remedied bij restarting the software.
I'm on a Mac Studio M1 Ultra (Ventura 13.2.1) and working with Premiere Pro 23.1.0 (Build 86).