Oh right sorry stupid of me the movies are 1080P downloaded not streamed, I don't know about the source or encoding so I can't answer that. I am using my tv screen as the monitor and it is a 40 inch screen, I don't know how this translates into extra power but I know it would be part of the problem. It's an amd apu A6-3400m processor, says AMD Radeon HD 6520G. It is a free labtop I got from Telus for signing on their internet for 3 years so it wouldn't be very good I am sure.