Ok so i can play FTB on far on about 30 fps, and i do so, but the problem is, at some random moments it just drops to 1-10 fps. AT those moments console is just spamming red lines faster that i can read them, they say something like 'Wrong location! qqZombie (my world name) (x;y;z chords)' and that for all hostile mobs over and over again lagging as hell. It is 'fixed' when i quit and reopen FTB, but thet as i said at some random moments it just starts all over again.. I dont use any texture packs or optifine (not anymore, at least). Does someone have a clue on this?