For this you have to trust me.
If your PC has at least
8 GB of RAM your good.
If you are using at least
Intel Core i5 you are good.
If you have at least
800GB on your Computer you are good.
If you meet all these requirements download
: Loilo Game Recorder. In my opinion it is the best recorder out there! It's completely free and no advertising is on the screen when watching the recording. + There is no lag, unless there is something wrong with your computer or your computer lag's a lot.
Cheers.
~OrbitFlash