Lightroom classic keeps freezing once in a while on iMac 27" 2020

 Hi everyone, since a long time, I try to use Lightroom Classic on my computer, and it keeps freezing for few minutes once in a while. Often when I open the software, sometine when I Develop, on try to add layers... 

iMac 27" 2020, processor 3,8 GHz, Intel Core i7, 8 core,

64 Go RAM, 2667 Mhz DDR4, 

Graphic Card AMD Radeon Pro 5700 XT 16 Go.

mac OS Monterey 12.5.1

Here everything I tried, nothing worked:

1. I tried to turn off GPU in lightroom preferences
2. I Uninstall LRc, Reboot computer, Reinstall Lrc, Reboot Computer
3.  I tried to reset preferences
4. I contacted Adobe support, and lost a lot and a lot of time. 

Please help before I burn my computer and never come back to Lightroom again.

Thanks!