i recently flash the stock rom of my docomo so-03e, then 4.1.2 sgp321 stock ftf with excluded partition during flashing, rooted, installed dual recovery, flashed 4.4.2 zip, then flash 4.4 stripped ftf with partition exclusion, then flashed deodexed zip file. i can finally say that the settings laggy problem is gone. good job sir specialist.
Heh, everything is on xda, ive only placed all infos in one thread and created files just for fun. But if works hit thanks button (^_-)