I've noticed this for several versions of Premiere Pro now, spanning two graphics cards and Windows versions, wondering if this is widespread or just me... But when it saves, like 80% of the time, the program stops responding for 2 seconds, then it saves. It just always gives me a little scare. Maybe that's what they want? lol, I dunno. But I think it started around the update where they added GFX card support for h.264 decoding. I'm on AMD, 3080 Ti, 32GB RAM, Windows 11.