HELP NEEDED URGENTLY! Substance Painter Not Responding in Iray Warmup, Critical Error, and CTDs

I am hoping someone here will be able to help me with my issue.  

I am having problems texturing models that are rather complex, however, my computer is more than above the minimum specs for substance painter and I am now getting a a tad bit perturbed at what is happening and has been for about the last month.  This shows my resolve to try to solve it on my own, and I am at my witts end with the problem.

First of all, my computer is a Ryzen 9th Generation 12 core 3.8ghz processor @4.2ghz.   My Graphic card is a RTX 2080ti 11gb, and I have 32gb of RAM on my windows 10 system which I am using to try to be able to render from Substance Painter.

Substance Painter randomly crashes to Desktop, and I have to texture several pieces and save every few moments or I'm afraid I'll loose alot of work with its random crashes.   When I try to render, it goes into iray warm up, but stays there.  And I mean STAYS there, for hours on end at times and sometimes it works.   Its very rare that it works.

I have gone into the system registry and performed the TDR Delay recommendatiuons, still no joy.   I am hoping that someone here may be able to help me with this, for the last time I posted about a problem here no one helped me at all.   I find it very shabby that you pay for a program but when you need help, its good luck to you if you get it.

Please, someone - anyone, any ideas?  I have made custom materials that I have added into my materials folder as well for this project, and I am trying to develop an add-on for a game with this, and these issues have bought my producing this project to a halt practically.

I'll look forward to anny suggestions. I have attached the log file as well.

John