@Firegod I've been reading through the thread here as have had issues with a Huawei CPE not being gaming friendly with EE. Out of interest, are you managing any online/multiplayer gaming with your Zyxel set up? We have resorted to an older, 4G router for now, as we know it doesn't give any NAT/IPv4/IPv6 issues, but I'd be keen to get the 5G back if we can. Also, not sure if it breaks forum rules, but where did you purchase it from?