I also sometimes have slow loading issues with a buzz xrs4500 epg when i used xc API to log in. But if i use m3u with a link for epg, it loads quickly but then the series doesn't load so i am forced to return to Xc API. The epg issue is as mentioned above. The channel i am watching will load the epg information but then all the other channels on the page take quite a long time to display any information