"You have been kicked for performing too many actions too fast."

I'm running a build with Hypothermia and two Barrier Invocations casting Comet.

I hold down shift to maintain Hypothermia casts, moving with WASD and then spam click Left and Right mouse buttons casting BI Comet's when Infernal Flame triggers. (1-2 Hypothermia casts per Comet per BI - ish).

This has not happened until today after I added the second Barrier Invocation, now the game is unplayable as after a minute or so in a map I get kicked out with the message "You have been kicked for performing too many actions too fast."

This