I am sure glad this thread exists. I was having similar issues. My build is about 3 months old and last week my system started crashing. Either the GPU crashes, leaving all fans and RGB on, or it totally shuts down. Once or twice it would reset, but would then immediately crash. After installing a new PSU, swapping for some borrowed ram, wiping my nvme drive and nearly pulling my hair out, we found this thread. Uninstalled TT RGB Plus and the problem went away completely.
Specs;
Asus ROG x470-F
AMD Ryzen 7 2700
Zotac 1070ti AMP! Edition
Corsair Vengeance RAM (16GB)
Corsair RM750X (This replaced the Rosewell HIVE 750 that was originally there, so there goes an extra $100 that I didn't need to spend)
TT Pure Plus 12 fans and controller
Thermaltake F31 case
I hope TT finds a solution to this issue, I now have basically no use for this $75 fan kit.