this is how we get DC:
cabal server limit number of skill packets client may send in a mount of time, when you break that limit you will be DC. So we can't help it, it's serverside.
But when you turn to battle mode 2, server doesn't check limit for normal atk. It's the use of skill no delay.
and BM2 normal atk of FS & WA is strong enough to farm & kill bosses
with sp regen hack, you spend 5000 sp you'll get 5000 sp, so you can use bm2 continuously ^^