After running Assetto Corsa Competizione in Steam VR mode for the first time. Monitor resolution instantly dropped to 640x480. Was able to set it back to native afterwards. VR display was fine. Ran it again the next day. Monitor resolution was fine, but Vive HDMI audio was crackling (was crackling earlier, but then thought it was an app issue). Went for a reboot. Black screen, no signal, after Windows startup. Monitor detected as generic pnp monitor. Resolution locked at 640x480.
Unblessed and blessed it again (BIOS, DDU, etc).
Same. Black screen on driver installation. Other 2 displayports work fine. Hardware defect?
UPDATE: Pimax 5k+ is working seemingly fine on that "faulty" port, but not quite. For example - Pitool brainwrap refresh rate setting change results in instant BSOD, which doesn't happen if Pimax is connected to any other port.
UPDATE2: Pitool refresh rate change also BSODs on other DPs. After more attempts to change it. Seems to be a sparate issue.