Force stop
Empty cache
Update channels .
Do this every day.
I presume you have decent Internet at home so could be bad WiFi connection.
Do that mate and to no avail the majority of the time.
Rock solid 70mb so it’s not that. IPTV won’t work/buffers so I go to watch Amazon or Netflix in 4k and it’s rock solid, crystal clear and that’s even with Atmos data going through.