WHEA 18 Cache Hierarchy Error reboots insanity

Hello.
Couple weeks ago i was unfortunate to cross path with infamous WHEA Logger Event ID 18 Machine Check Exception Cache Hierarchy Error. Every time when i want to play something demanding like Warframe, total war warhammer 2 or even garrys mod. Screen goes dark after just clicking icons and whole pc just restart itself.

Only thing that is registered its a WHEA bug in a Event viever with random APIC ID (1, 8, 9, 12...). When looking around other forums and this one , noticed a large amount of these bugs. My bet its a windows updates, but sadly i don’t remember when the crashes appeared. Checked temps, played around in bios, checked for mechanical damage, and no fix. Below i put things that i tried and also specs.

1. Updated everything that needed update (Windows, drivers,Bios)
2. Memtest86 (passed)
3. I uninstalled gpu drivers with DDU and installed multiple different with no success
4. Checked for temperature, between 70 to 80
5. Re pasted and add new termopads to gpu
6. Under-clocking, over-clocking didn’t bring any results
7. Bios reset to default settings didn’t bring any results
8. Disabled Precision Boost Overdrive (PBO) no success
9. Disabled Global C-States, nope
10. Tested each XMP profiles (3000,3200,3600) no success
11. Added positive voltage offsets and tested each. Added +0.025 V to cpu and worked only for like 3 hours and crashes and started adding more voltages to test them with no results (+0.050, V+0.075, V+0.100 V)
12. Removed all CPU overclocking with voltages and none voltages, no success

PCspecs:

CPU: AMD Ryzen 7 5700X 8 Cores / 16 Threads

Motherboard: ASUS PRIME B550M-A BIOS Version 3636 (2026-01-04)

Memory sticks: 16 GB (2×8 GB) Kingston Fury Beast Model: KF3600C17D4/8GX

GPU: PowerColor Radeon RX 6600 XT Fighter 8GB

PSU: Cooler Master MWE Gold V2 750W Fully Modular

Storage: WD Green SN350 1TB NVMe Crucial MX300 275GB SATA SSD WD Blue 1TB HDD

OS:Windows 11 Home 25H2 Build 26200.8737