Wow, sounds like the problem I had. I discovered what the fix is and the reason for interruptions. Who knows, this fix might work for you.
These past few months I have been having trouble with my Roku Premier. Sometimes it takes a long time to connect to ESPN+ or FSTV and when it does fail, it tells me my download speed is too slow 0 to 1 MBPS - bull cookies!. And it constantly cuts out and has to reload the program - so annoying. I check my internet speed during the Roku problem and it usually shows 170 to over 200 MBPS. So Roku is misdiagnosing the problem. I found a fix - for my Roku anyway. I suspected the little Roku box is too warm and possibly affecting the electronics, so I removed it and put it in the freezer for about 20 minutes. I plugged it in and within seconds ESPN and then FSTV was loaded up within seconds. I repeated this "lab test" several times and cooling the circuits down did the trick. So now, when I'm done with using Roku, I unplug the power to the Roku. If that little box was designed with vent holes, it probably would not overheat and wack out the circuits.
