Pues segun he leido editando /system/bin/user.conf y cambiando lo siguiente
#compcache related parameters
compcache{
compcache_en=1 # enable(0) or disable(1) compcache
cc_disksize=32 # Ram swap disksize - any number between 1 to 95 should work; default is 1/4 of the RAM (24)
cc_memlimit=16 # Limit the memory usage for backing swap (cc .5x known issue-defaults to 15% of total RAM)
cc_backingswap_en=0 # enable(0) or disable(1) backing swap
cc_backingswap=/dev/block/mmcblk0p3 # pointing to the backingswap partition device, swap
cc_swappiness=30 # default 60
Hay que ponerlo a 1 claro..