no, i'm using windows 8.1 64 bit, some other details: 8-gigabyte ddr3 RAM, 750 gb HDD, a nvidia geforce GT640M, and a Intel Core i5-3210M with 2.50 GHz
After about 10 minutes, the game, regardless of which modpack, the fps drop drastically. This only stops after I completely restart the game.
Sorry if false section, I#m new to this forum.
EDIT: it begins now about all two minutes please help