I have a Insignia Roku TV, 5408X. Software version is 8.1.0. 4140-20
I've had the TV for a year, and up until the last few months it worked fine. But now I've been having a network issue-- the wireless connection would only work for around 10-15 minutes streaming on any channel, before it would buffer, get a network error, read "You're not connected to the internet," and essentially crash the channel. I would have to return to home and disconnect/reconnect the wireless network and then go back to streaming, only to have to do it again in 10-15 minutes. This was making the TV basically unusable.
I tried various online fixes (system restart, software update, the "secret menu" stuff) to no avail until last night I just decided to do a full factory reset. Set the account up again, got connected to the same old network, and voila! I streamed Netflix for a few hours with no buffering or crashing. I thought I had fixed it, until today, a day later, it's back to the same thing-- disconnecting every 10 minutes.
I don't think this is a problem with my router/internet, because other devices in the same room work fine. It also says the signal strength is "Good" or "Excellent," and I never have any buffering/signal strength issues in between the crashes, which is confusing to me. It seems like it's just dropping the connection at random. If anyone has any idea what's up I'd gladly appreciate it.