So ever since i updated to the 1.4.6 packs like the direwolf20 pack and the Mindcrack one i have gotten so much lag, with optifine installed i get 25fps at the most and im sure once i got any sort of automation it would drop to 10fps or lower so the strange thing about this is with a 1.4.5 pack just made by myself that had all the FTB mods plus a few i was running at 60+ fps at all times.So what i would like to know is has anybody else experienced this sudden change? because it has rendered the game unplayable for me.