Why the downgrade to 1.03.10 is not recommended?

I haven’t tried an ISO, if I have time I’ll do it tonight or tomorrow. But still, this shouldn’t be happening. I have a router that kicks butt (asus rt-n56u) less than 15 feet away from the WDTV and the computer where I have my movies is connected to the router with a cable, at 1Gbps. It’s definitely not a bandwith issue or the router being too far away.