Bonjour et Bienvenue sur le forum Render[in] !
On which platform are you using Render[in] ? macOS or Windows ?
Which OS Version ?
Is it a new crash ?
Have you used Render[in] before ?
Best regards,
Camille Sarrut
Hi Camille
Running it on Windows 10 64bit prior to the graphic issue and after the issue.
So it looks like making system changes to processor count in MSCONFIG is what causes this issue.
I migrated a system disk to a new computer with greater processor counts, when I reinstall processors to the system the count went from 32 to the actual 56 cores. I then made the change to boot with 56 cores and after reboot the renderin artifacts came up and making any changes to renderin menus or viewer size crashes it and the sketchup environment.
To resolve the issue revert the boot processor count to 32 cores.
I am now looking at how to have the system see and use all its cores and not recreate this issue. 
Please let me know what you all figure out…thanks
I think you found out the problem, Render[in] is limited to 32 processors.
I agree that it could tell it more gracefully …
Sorry for the inconvenience.