Hello, My friends and i started up a server using Pytohost. We run the Mindcrack mod pack. We use like a 30$ per month server so its not lagy for us 8 on the server. I am currently running on an iMac that i bought about 2 months ago i never lagged before this new update to the modpack i was running at about 50-60 fps on our FTB server. Now with this new update Im running like 10-20 and m game keeps crashing. I dont have Optifine or razor game booster and I dont want to get it if i dont have to. But if I do thats fine. Please post your suggestions and if I need optifine please post the download there for mac also. thanks