Massive FPS drop because of SU9

[MichaMMA]

you can check the existing hints for “limited by mainthread”…

And : we have a user report that exactly that tool you use for “tweaking and monitoring” ( Asus GPU Tweak ) caused for him the performance issue.

Limited by main thread

Not sure if this may help you girls and guys but its yet another variable among thousands to consider when you are troubleshooting … I had a graphics card vendor provided “utility” that I installed (d’oh) to allow tweaking, overclocking and presenting the card’s performance metrics on a dashboard (e.g. fan speeds, GPU temperature etc.) and it was auto-loading minimised when the PC started so I missed it completely. It must have been developed by monkeys (i.e. shockingly bad programming skills) …