channels are all buffering

It can't be the t1 plus....the t1 plus is the best Iptv box that I have seen so far.
Give us a little bit more info.

Components in all boxes can fail at any time. Recently worked on a T1 original that had burnt out emmc storage. So it certainly can happen.

OP, did your problem resolve? Was it working good before? Any changes on your network since then? Internet speed? Downloading/uploading/streaming on other devices on your network @ the same time you notice buffering?