You are not scanning at the same time? Please post your PC specs re cpu type and ram/Operating System etc
Windows 7 pro 64 bit service pack 1
intel i7- 3770 CPU @3.40Ghz
do you mean iam i running a system scan at the same time ?
no i am not
turning off real time scanning makes VS perform in micro seconds
when its on VS takes 10seconds to open
then another 10 seconds to open a basic 1 winform solution
That PC should run fine I would guess that the install got messed up.
Three suggestions to try then I reckon you need to call support.
Try running the MVT virtual technician program found on the support site.
If no fix Did you even have another AV program installed? If yes did you remove it with its own removal tool it might be clashing with Mcafee or at least bits or it could.
Finally Try removing Mcafee following this method
reboot a couple of times and run
and reinstall from your account
If all above fails call support and if they no chop ask for an escalation call back.