Hi guys, My internal HD already has limited space so I want to buy a new external drive 3.5 or 2.5 with 3TB or 4TB (the laptop has 2.0 USB so I dont think it matters if the external drive has 2.0 or 3.0 connection. Pls correct me if I am wrong.) My doubt is if HD movies will have lag/latency playing straight from this drive. It's quite important since I used it mainly as media center. Thanks a ton.