Im not sure what the basis is of the issue, but Im not having the same issue with any of the other apps. It just sits there and wont buffer, once you back out and go back in to resume, you may or may not get HD. Once you get it going it seems to be fine, its just getting it going. One show can be acting up, and if I swap to another, itll buffer and start HD fine, Makes no sense.
Mine is a 6mbps down connection, hit 5.5 all day long on different speed tests.
65" VT50 / BDP-S6200
X4000 / Outlaw Model 7125
Klipsch RF82 II and RC62 II / Hsu VTF-15H (2)