I tried disabling "nvidia settings -> opengl settings -> sync to vblank" but did not help.

I am still wondering how to do "vblank_mode=0 vmware" thingy. Please help!

However, i have noticed that, my cpu usage goes high only when i start "CentOS" vm. (My host is ubuntu 14 04 lts) It is not the case when i run my other two ubuntu 14 04 lts vms.