Best to unplug your router just pull power lead out of the back then reinstate it after 30 seconds. Maybe your provider if sports are a bit stuttery but you don't say what box you have?
Sounds like it would be a provider issue. when you see it happening again switch to a non paid channel like BBC and see if it happens, if it don't it will be the feed that your provider gets.
I see what you are saying pal i did think he was just using IPTV and not FTA TV my bad.This wouldn't show him anything mate has BBC is a fta satellite channel so he has to reset his router to refresh it back up to full speed if it is still the same it could be provider or it could be his internet provider. BBC will always work fine unless his dish was out of line or really bad weather etc.
Yes, I can see the merit in a quality router as I understand they have greater memory and it makes sense they will cope better with the demands of iptv. However think at the moment will settle on the regular rebooting which in my case with an excellent sub works fine.I have a good quality router the difference is you can get away with a reboot about once a month. however, i have mine on a timer so it reboots every day around 5am