My Dell Inspiron 3443 Laptop lags in some games that I've tried playing. NBA 2K15, NBA 2K16 and GTA V. I've seen videos on Youtube that shows the performance of those games on Inspiron 3443 (4GB RAM, i5-5200U, 2GB NVIDIA GT820m) and they're actually running quite fine. What I don't understand is that I have the same specs with those guys but my laptop is lagging like hell when I play those games. My laptop has almost identical specs with my computer (8GB RAM, 2GB NVIDIA GT630, i3-3240) but it can't run those games properly. I just want to know any work-arounds or even diagnosis on my laptop. Laptop's 7 months old.