According to Blizzard support, the excess player lag problem is caused by players data collecting addons flooding the network before reaching the server. Not just your own addons, all players in the zone. The more players in a zone, the more addons, the worse the lag. I assume same issue in epic bgs. Imo if an addon causes lag for a high % of players in a zone, that’s grounds for Blizz disabling that addon. I guess Blizz would do that if it was a general issue for everyone. Seems not.