I updated Rhino8 to V8.12 yesterday and the software was running super slow for any action when it was running perfect with V8.11 with the same file. I tried rebooting my mac, deleting unnecessary geometry, opening other files and nothing fixed the issue.
Today I uninstalled 8.12 and installed V8.11 and everything seems to be running normally again.
System: 2021 MacBook Pro w/Apple M1 Max
OS: Sonoma 14.6.1
After working for a bit longer, V8.11 is lagging on and off as well. My company released a security update for macs yesterday and I am beginning to think that is the culprit.