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Re: PG27AQDP, 5090 and 9800x3d degrades oddly after reinstall
Posted: 21 May 2026, 05:36
by peak
unconnected wrote: ↑12 May 2026, 06:10
peak wrote: ↑10 Apr 2026, 10:51
A
I have your same setup 1:1, what hepled me most was updating the monitor fw to v6, mpo disabled and only one monitor connected (that enabled gpu scaling - which is on).
If you ever come down the brenner text me I'll let you test my setup for comparison
I fixed it with a new motherboard, it was somehow faulty despite not showing up in any stress tests. The system started behaving really weird down the line and corrupted boot files.
I suspected it was the motherboard for the longest considering the weird behavior after a few boots and hardware changes manipulating the issue.
Re: PG27AQDP, 5090 and 9800x3d degrades oddly after reinstall
Posted: 21 May 2026, 15:57
by vnb
peak wrote: ↑21 May 2026, 05:36
unconnected wrote: ↑12 May 2026, 06:10
peak wrote: ↑10 Apr 2026, 10:51
A
I have your same setup 1:1, what hepled me most was updating the monitor fw to v6, mpo disabled and only one monitor connected (that enabled gpu scaling - which is on).
If you ever come down the brenner text me I'll let you test my setup for comparison
I fixed it with a new motherboard, it was somehow faulty despite not showing up in any stress tests. The system started behaving really weird down the line and corrupted boot files.
I suspected it was the motherboard for the longest considering the weird behavior after a few boots and hardware changes manipulating the issue.
thanks for the feedback. Most people find their "solutions" and never report back!
Could you please tell us what was the old motherboard? and what is the new one?