I got the same issue that I couldnt seem to resolve, so I disabled PCIE advance options.

My mobo/PCIe was giving a lot of PCIe correction warnings (picked up by HWINFO64 as PCIe errors). The logs shows PCIe error correction.

Couldnt pinpoint the riser that gave these problems.

Seems to be random. Some riser boards would be error-less, but some combination would register those errors.

So I gave up and disabled pcie advanced options which seems to include those error correction warning reports.

Would be happy if anyone has a better solution?