I read all of your post about a day ago, we had been having the same problems with the remote. I discovered this by complete accident. We all know that the remotes work on wifi, when using our brand new roku TV the lag was over 1 minute, we had already been having the same issues on the 4 other rokus in the house but why the new TV. At the time both of my kids were streaming videos off of our home server, we had 4 cell phones,1 tablet, and 2 more tv's all being used at the same time. So i went into my routers settings to look at the client list. I discovered an option while I was in there that is enabled its WMM and what it does is prioritize your wifi traffic in order from Voice/cell phone, video, best effort, and background. These remotes work on background the lowest on the list. By disabling the wmm I had no effect on the steaming or voice btu my remotes all worked perfectly.