Thanks. Ironically, I think it was the BOINC screensaver, which oddly never comes on while running BOINC but does come on only after a minute or two of AIDA64. Must have installed itself with the BOINC manager.
First post. Love the product and the active support community! I *think* I have a stable system: Ryzen 5 1600 3.8 GHz @ 1.3375v MSI Tomahawk B350 16GB Corsair LPX 3200 RAM running at 2666 @ 1.36v EVGA GTX 1070 SC with a +100/500 overclock GPU/memory Plenty of clean power via an EVGA Supernova G2 750w PSU I've run AIDA64 for hours without failures with the ^^ settings after some failed tests made me pull back my memory clock and increase my Vcore. Most recently I ran FPU by itself without issue (76C max temp on top-down air cooling in a "meh" airflow case.