UPDATE: 8:19 am 6/18/16
Just checked my re-occurring timers I set from the guide from last night and ALL played fine today. I set timers on different ota channels and they all played fine. I set them to start early at 0 and end on time with no padding. I think that the ota problems are FIXED! At least on my hopper they are. So just to remind you what I did to see this change. I deleted all my ota channels in the menu and then re scanned them. I also did a power cord reboot and this seems to have fixed the problems. Might even help to unplug the ota tuner and let the receiver reboot without it plugged in then plug it back in and start the scan. I will know for sure if this last more than just the two days I have seen , but so far all timers are working and playing back with NO audio drop outs or pixelation.