Hi,
I have been using Nitro TV as my main service on my Firestick with Prime streams as back up for close to a year now with no major issues.
In the past month or so however, both have been experiencing major buffering issues and i'm not quite sure what the problem is. Initially I thought that the issue might be with the iptv provider but when using the iptv web player on my laptop there isn't any buffering.
I've done a speed test on the firestick and get speeds of 25 Mbps. I've also cleared up space and cleared cache as seen on other posts.
I'm not quite sure what else to do. Any help would be appreciated.
Try swapping from 2.4Ghz Wifi to 5Ghz WiFi (if possible) or vice versa. I’ve had this issue on a Firestick in the past.