Sorry for the long post....
My System:
Ryzen 5 5600x
x570 Aorus Elite Bios F 31h
Gskill TridentZ RGB 2x8 3600 mhz CL18
MSI 2080 Super Ventus
1 M.2 disc for Windows and 1 M.2 for games and data.
Seasonic Focus 850W 80+ gold PSU
What a nightmare this "upgrade" has been. Many hours spent and many windows reinstall. Just having the PC to post was a big deal, Q flash never worked had to get a r5 2600 CPU from a friend to actually post and update bios.
Everything looked fine in windows, after updating BIOS Installed chipset, audio and LAN drivers from Gigabyte website. I was running the system with all settings as default/auto. Turned XMP on and ran benchmarks, all good. Cinebench r 20 and r23 running good. Started a game (Rogue Company) and system crashed (Bios reset) within 5 min. Repeated and crashed. Opened Horizon Zero Dawn to run the benchmark and crashed within 20 sec.
Event viewer showed WHEA errors, kernel erros and more. Decided reinstall windows fresh (again) guessing something went wrong with it. New windows, installed same drivers, only downloaded steam and HWinfo, SAME problems of course.
Found out that if I disable Core Boost Performance from bios and enable XMP everything runs smooth and crisp (benchmarks and games). But my chip is running at 3.7 ghz. On the other hand, if I run my DDR4 at default 2133 mhz and Disable CBP I can All core boost 4.6 ghz 1.3 volts and be stable. Both scenarios give me similar scores in HZD benchmark.
Any sort of CBP and PBO values I do will end up crashing on HZD benchmark, regardless the memory speed. Running ryzen master for PBO and Auto clock delivers same results. After many hours of memory timings and overclocking managed to stabilize the system with: all core boost 3.9 ghz 1.2 V, all settings auto (LLC, SoC volts, etc.) and XMP on 3600 mhz CL 18 1.35v.
This run smooth and crisp in games and benchmarks, allowing for best "stable" scores.
Obviously I'm not happy, besides the hard work and many hours invested to stabilize, this is not the performance I payed for. Should've stayed on my i7 9700k :(
Should I get a new mobo, should I issue a RMA on the CPU, wait for Bios updates/better drivers?