I'm sorry to hear that you have not updated your computer in the last 10 to 15 years and it's performing badly for you.
Or perhaps the WiFi connection of your computer, due to it's location is giving you a really bad signal, making web pages come up slowly
I'm guessing you buy your Movies from iTunes so the iPad is able to play them, or do you use your PC to covert them into a format the iPad can handle?
I bought Nova2 a couple of weeks ago, and played it for 5 minutes, not touched in since, as I instantly realised how bad it was to play by sliding your fingers over the smooth screen surface which was also the display I was looking at.