first 40gb of downloading was fine, but after 40gb on battle.net it slowed down and rn trying to download at 80kb. is this cause of diablo 4 servers ? my internet is 1000mbit
Have you turned off the DL limit in the BN settings?
Dunno, loaded the game very fast with no issues. If you have the limit or its very low speed; there is your issue. Or perhaps you have slow connection to begin with? or perhaps you use HDD instead of SSD? there are many things that could slow down the download.