My patience has worn thin at this point, and I'm starting to regret my purchase of the Roku for mlb.tv. I sincerely thought the issues would be ironed out by now. I have updated my roku, and the problems have pretty much gotten worse. It's embarassing to have people over to watch a game and have the Roku constantly go through the "loading" issues and then finally lock up and tell me it cant get a video stream and that I may have to cut the power to the Roku, and when I do it doesn't fix the issue. I've had to resort to hooking my laptop up to the tv to watch the game totally defeating the purpose of having the Roku box in the first place. What's worse is the laptop does it even better, way less lag, and no loading issues, not giving me much incentive to use the Roku. With the Roku there is no consistency in it having issues either, it appears to happen randomly throughout a game, with the only consistency being that it happens every game at some point.
It seems to me that when your progress starts going backwards, it is time to reevaluate how you're approaching the issue.