Broken Monodevelop windows 8

Its unusable, it hangs, mouse refuses to work in menus ( for example you can click on checkbox and its highlighted … but its not swtiching i have to press SPACEBAR for it to work)
it refuses to show classes info, scroll not working , the cursor stuck in bracket state,
and the worst is the lag i get, THE LAG first time i experience this.

What do?

You can use Visual Studio as well