The accuracy is not fine, kills range from 2-6 minutes and thats not prep time thats just the boss fight itself, the current global times are set with a bug being pre potted before entering using a bug someone was able to get osrs times. I did a 3min prep in normal and hun time should be 2min or so and it took me over 6 minutes for a total time of 9mins and change weapon accuracy is wrong or the bosses stats are if you think the current state of gaunt is fine I highly question the validity of your "countless kc". as someone that actually has kc these are the problems as they stand.
Ground tiles ignite much too quickly in corrupt.
Weapon accuracy or boss stats are tweaked wrong.
Rooms can render in such a way you can't access or move through them
Make all is default on singing bowl which causes you to waste shards if you forget.
Crystal tornadoes current true tile is a tile possibly 2 ahead of the model causing you to get hit and not being able to properly woox walk with halberd.
The fishing ticks are much slower than they should be as on osrs you basically insta fish, with the delayed fishing you're losing time on prep by a ton.
Killing a demi boss multiple times results in the same perfected weapon piece being dropped rather than a unique one. Where on 07 say you kill a bear, you can leave the spike on the floor kill another bear and then it will drop a bow string or orb.