Good to hear bud, I tend to play some games on my Tab and on CM11 4.4.2 it was brilliant. Very little heat, great battery and no slow downs. I hope 4.4.4 is just as smooth.
Seems this Build goes hand in hand with this CM ROM

I will add though I'm using it on Stable CM weekly releases.
(Can't comment on Nightly CM compatability but someone put it wasn't working ???)
Don't know if that's still the case though.
Yeah he is a Chinese Dev (I think). very talented also.
This Kernel is definitely better than stock.
(No offence to Infected_ he's a very talented programmer. Maybe it the CM source codes causing problems. Either way he's made an awesome ROM none the less)
This Kernel Build has fast charge built in but I haven't tested it.

Yeah Judging by last CM build and The latest stable booting up with no problems. I'm guessing were OK for now

I bet Android L when it's ported to CM will have many many many differences in the source code.
But by then ART will be pretty much optimised and 'lag' should hopefully be a thing of the past.