Optimized for gaming?

i'm running Windows 10 with parallel desktop 10 and I'm quite disappointed performance wise.

I have a late 2013 IMac, fully maxed out:
Intel i7 quad core @ 3.5ghz
Nvidia Gtx 780m with 4gb of vram
32 gb of ram

And with those specs, that is much more than enough. I am expecting parallels to do decently well when I run games but I'm very disappointed, my games lag so much. Does anyone have a recommended setup for the Virtual Machine settings for Windows 10?

If you need a reference to the games I play (and honestly if I can run the game in lowest settings with 40 fps I'm perfectly fine)

GTA V
Saints row 4
Dead island (+riptide)
Skyrim

I honestly thought saints row would work but no, it is extremely laggy. Again I believe this is my current set up but all I am asking is for recommendations on how you guys make your games run smoothly?

 

Please check with the Game's system requirements as Parallels Desktop does support only upto DirectX10 and OpenGL 2.1. Please let us know if these games does fall within this limitation and we will assist you accordingly.

 

You can check for the game's recommended specs in steam and compare it with mine. I included some screen shots of GTA V's recommended specs: (as you can see, my Mac should be more than enough to run this)