STB Emu Buffering

Hey guys so I recently stopped using cable and opted for IPTV and got stb emu on my firestick. I bought a subscription for Express and it was good for like a month but now there's frequent pauses on certain channels and other channels are just a black screen. I'm using a MAC address type subscription so I'm not sure if that could also be contributing to my problem. I'd we willing to invest in a proper mag/android box if it meant the buffering would stop. I've also seen some stuff about m3u playlist subscriptions and would be interested in those if they buffered less. Any help would be appreciated. Thanks