Change this setting in your control panel to "Single Display performance mode". I believe you can do this at a program specific level so you can do it for the osu!.exe and it should work. Click the image to enlarge it.Chalupa wrote:
My CPU is underclocked actually, and I have no additional antivirus installed.I do believe this may be tied to some combination of windows anniversary update and the nvidia drivers interacting poorly. I have discovered that if I disconnect my top most monitor (a 4K display at 60HZ) that all performance issues disappear. This was not previously an issue, leading me to believe that drivers must be the culprit as again, this is a clean windows instillation, and this issue did not previously exist. I do not know if there is anything I can do other than wait for Nvidia/Microsoft to sort this out.
Next time you have an issue please provide your DXDiag, if I knew you had a multi-monitor setup I would have suggested this earlier.
I do believe that your graphics drivers shouldn't be a real issue and that it's more the lack of configuration with your system.