Create lower resolution of high-res mesh with Multiresolution -> Reverse
Switch back to high resolution
Looks like something is wonky when it tries showing the lower-res version during camera move.
(Also, I’m getting a crash when trying to make a lower-res multiresolution level in a copy of this file. Weirdly, this file lets me make a lower-res version. If I make a copy of it with Save As, then try doing a Reverse on the copy, it crashes.)
I can’t seem to reproduce with other models, either. Even ones created in the previous version. Looking at how the screwy model is structured, maybe something to do with the painted vertices? Is there a way to clear all vertex paint info?
Some more information on the crashing: the crashing on reverse issue appears to be when I have one mesh open, then open another and do the reverse operation (so, I had the original file open, created/opened a copy, then tried the Reverse, and it crashed).
If I have a copy of the project open, force quit the app, then reopen so the copy is the first thing opened, I’m able to do a multires Reverse, and the rendering issue shows up there, too. I’ll email you a dropbox link for the file.
The issue was that app was trying to render the lower resolution when it shouldn’t have to.
Depending on the topology, sometimes I can’t reuse the lower resolution, and it was the case here.
Instead of reverting to the old behaviour I manage to fix the whole thing, so now it should always be possible to reuse lower resolution.
It was a limitation that I had for probably more than 5 years (from sculptgl).
Concerning the crash, I suspect you simply ran out of memory.
You can check the “free” ram.