It was me who insist compcache statistics to be disabled because of performance reasons (there are several spinlocks involved as you may see in source code which COULD result in performance loss). Instead of enabling stats for general public, I think it is better to just rebuild module from compcache thread with stats enabled and test with it. And if you find which exactly kernel parameter causes swap trashing when RAM/compcache is full I think all of us will say BIG thank you . For changing compress threshold - maybe it will have slight difference in memory consumption, but I think our major problem is swap trashing, not few megs of RAM more.

EDIT:
And maybe it is better to continue compcache conversation on its dedicated thread.

EDIT2:

For those of you who are unable to play videos with KP48-49 - I am sure it is because of your overclocking profile, DSP subsystem is totally new and voltages which were OK with KP47, are slightly lower than needed in KP48-49. Try to increase your voltages by 1 and try again video playing(after reboot).