Dual display 1 for gaming the other for youtube

[Teachh]

So I've got this little dual monitor extended display set up where i play a game such as overwatch on full screen on one display and I've got a youtube video playing on the other screen. I notice a slight stutter when playing game and would like to know how I can make it go away. Would increasing my ram from 8gig to 16gig do it?

Also my gaming screen is on 1920X1080 @60fps while my youtube screen is on 1600X900 @60fps

Specs
OS: Windows 10 pro 64 bit
CPU i5 3470 @320GHz
Ram 8gb Single-channel ddr3 @665MHz
MotherBoard Intel Corp DH67BL
Graphics card: GTX 960 (MSI)
Display: Samsung C24F390 and UA22ES5000

 

[Dr Girlfriend]

Could try going into the Nvidia control panel and setting the GPU to single display mode (for gaming, doesn't disable the second monitor). Fixed it for me when I had this issue,