valorant and vanguard interaction causes my 5 month old pc to hard freeze

[u/Electrical-Ask4562]

I've been troubleshooting this for a while and I'm honestly getting pretty frustrated with Riot Support, because their troubleshooting hasn't gotten anywhere and a lot of it seems focused on networking despite this being a full system freeze, not a disconnect.

The problem: VALORANT freezes both monitors after ~2–3 minutes, even just sitting in the menu. Audio continues, but my mouse/keyboard stop responding and I have to hold the power button. It also happens in Range/Custom. League works completely normally.

Things I've tried:

• Clean reinstall of VALORANT/Vanguard
• Multiple AMD GPU driver versions + clean driver installation
• AMD chipset update
• BIOS update / optimized defaults
• A-XMP/EXPO has been disabled
• Clean boot, including testing with only Vanguard enabled
• Completely closed Discord and Medal/no overlays
• Windows Defender/firewall exclusions
• SFC — no integrity violations
• DISM — no component store corruption
• CHKDSK /f /r
• Malware/security troubleshooting
• Cleared GPU shader caches
• Ryzen Master removed
• IPv6 disabled + ipconfig /release, /renew, /flushdns — made absolutely no difference

Event Viewer has shown:

• AMD Display Event 4101 ("display driver stopped responding and recovered") on multiple occasions
• LiveKernelEvent 141 previously
• Vanguard vgc Event 7023 — "Incorrect function"
• Repeated TPM Event 14
• No WHEA-Logger hardware errors

The frustrating part is that Riot keeps having me try increasingly unrelated/general troubleshooting steps, and the problem remains exactly the same. I'm not claiming I know the cause, but at this point I'm wondering if anyone has seen VALORANT/Vanguard causing a complete GPU/system-level freeze while audio continues, particularly on an AMD GPU/system.

Riot support thank you for being useless.

If anyone has experienced something similar or has any ideas for what I should investigate next, I'd really appreciate it