Under the normal stability test the GPU test for 12V should be in the folder - any fluctuation would indicate a failing PSU (or graphics power circuit). I would strongly advise NOT to use the power supply test. OCCT can actually kill a perfectly good PSU on occasion. Your best bet would be to have the power supply tested. If there is any abnormality with the 12V rail, then get ready to contact your etailer/retailer/Corsair for a warranty claim.