When working with AI images, having the Properties Panel open slows everything to a crawl

I’ve created 2 AI variations of a layer in my document in PS Beta 27.12.0. The image size is 2960x2844 RGB. Nothing unusual or big (I’m on a PC, Windows 11, with 128GB RAM and 24GB VRAM). If I have the Properties Panel open and click to toggle the visibility of a layer, it takes ~5 secs to update the image. If I close the Properties Panel, it updates instantly. I have 2 AI-generated layers in my image. If I delete those layers, showing/hiding any layer updates instantly. I have 5 layers in the image (2 are AI-generated). Annoyingly, even if I close the Properties Panel, if I do any kind of AI stuff, it pops open again and spoils the party by slowing everything down again.

Quitting and relaunching PS, and reloading that same document did not change anything - the problem still persists.