I also have ahigh-performance compputer.the game does not lag but I sometimes have problems bacause next level doesn't load and I have to resume from my save data which is no problem at all and as I said before this game is 5/5 fun 5/5 action and 5/5 music!!!
I used to hate it because of the very difficult genetic lab but now that i passed through hell the game has gotten easy and I finished it on hard mode! I also changed my rating from 1/5 to 5/5