If you are playing on a school Chromebook or a slow computer, the game might lag even if it is unblocked.
Because the official krunker.io domain is often the first to be blocked, the game has spawned numerous "mirror" sites hosted on different URLs. krunker hub unblocked
I can recommend the for your exact situation. Share public link If you are playing on a school Chromebook
: Browse user-generated maps, custom mods, and giveaway events hosted by the community. Accessing "Unblocked" Versions Krunker Hub - GameFAQs krunker hub unblocked