PoE2 Random crashes / instant power cut since patch 0.5.X hotfix

System specs:

GPU: PowerColor Radeon RX 7900 GRE 16GB Hellhound (Sept 2024)
CPU: Intel Core i5-12600KF
PSU: EVGA 850W 80+ Gold
OS: Windows 11
Drivers: AMD Adrenalin 25.10.2 (also tested newer versions)

Symptoms:
Main monitor goes gray, secondary monitors go black, audio loops on a single tone, system requires hard reset. Happens during gameplay and in the currency exchange UI. Has also occurred at the login screen before even loading a character.
What the logs show:
Every crash produces a Kernel-Power Event ID 41 with BugcheckCode 0 — meaning the system lost power instantly with zero OS involvement, no BSOD, no driver error. This points to PSU protection tripping from a sudden power spike rather than any software crash.
Hardware stress tests passed — system is healthy:

3DMark Time Spy Extreme + Steel Nomad: completed without crash, GPU peaked at ~290W total board power, max 65°C
AMD Adrenalin built-in stress test (600s): completed without crash, peaked ~300W, max 65°C
12V rail under sustained load: min 11.71V, within ATX spec
No thermal throttling, no driver TDR errors at any point

Everything tried — none fixed it:

Switched graphics API: DX12 → Vulkan → DX11
Disabled HAGS (Hardware Accelerated GPU Scheduling)
Disabled AMD Anti-Lag, Radeon Boost, in-game overlay
Disabled Auto HDR
Disabled XMP/EXPO in BIOS
Ran PoEUncrasher in background
Steam launch options: --noasync --waitforpreload
Deleted shader cache
Set GPU power limit to -10% in Adrenalin
Windowed Fullscreen mode
Rolled back to October 2025 AMD drivers

It worked fine the first couple of days since the 0.5 launch but started happening around June 5-6, coinciding with the 0.5.1 hotfix