I have just rebuilt blender-3.0.0 verifying that the above packages that should not be set are not. If I figure out what the issue was I will report back, but otherwise I hope to consider this closed and continue working.

@Sebastian Jansson (sebastian) Parborg (zeddb) , to clarify -- blender was unstable with the default build argumentson my system. I queried the possible additions and thought that since I am not compiling with CUDA on my laptop I should add standalone. So, adding standalone was one of my actions. After reviewing the blender_release.cmake I will rebuild my system with +ndof +opencl as you have them on by default. I will also note that I am building with the system provided Python-3.9. It is stable with 3.9 correct?

BTW, with a name like "standalone" and no explanation I figured that since I am not building with CUDA on my laptop because CUDA no longer supports the dual GPU's in my laptop this would be a standalone build. Sorry I completely misinterpreted the meaning of standalone.

Gentoo typically builds everything from source. Some of the options may be hidden internally, but if we are missing things from the gentoo ebuild (package spec) compared to the official blender release, then we should fix that. If I keep having stability issues I may well develop a binary install ebuild, but that is generally frown upon.

Fair enough. I have only used blender a handful of times and still consider myself quite a noob. I forget if one of the tools I had wanted to use was in a new modeling project did not work in 2.93, or if it was be stumbling into the following warning:

Thank you. I was looking for recommendations for the most stable, or baring that what other options are known to cause instabilities.

Just in case it is useful I will load build log for review{F12790559}? Also thank you for the note about Cycles standalone being unstable --I have had nothing but grief with trying to run Ladybug and BlenderGIS. I'll try hacking to remove Cycles standalone. I just wonder if there are other issues as well.