Is this normal behaviour for a GTX 670 (CS GO menu)?

[Turbonium]

While running CS GO, the menus are slightly "laggy", meaning when I move the cursor around, it takes a very short but perceptible time to respond (it feels like I'm dragging the cursor through some molasses). The game itself runs fine.

CPU: i5 3570
GPU: GTX 670 2GB @ stock -> 1920x1200 (everything maxed)
Driver: 314.22

I'm assuming it's normal behaviour?

 

[WiseUp216]

Just played CS:GO today and did not experience this.

 

[Dankk]

Turn off Vsync.

 

[BTRY B 529th FA BN]

I remember UT3 having this issue. I think it was fixed by some command line addition. Either the executable needed to be ran in single core mode or otherwise. Ah, OK. Did a quick google and the command line added was '-onethread'

First link to pop-up was from the guys and gals over at *cough* Steam