NuSpirit
Loving YTtalk
You have simply too weak laptop. Some €300 (or less) ones can sometimes barely run Google Chrome (I was reading posts in this topic, but I probably missed your PC specs - however often these PCs (in this price range) have only Dual Core, while your software require at least 4 Cores). Even with i5 4670k and GTX 770 I sometimes struggle with freezing or lag with my editing software (mainly during preview). So best for you would be going back to your PC and possibly invest there some cash to improve it