I too have this problem, I can record the game play BUT it is choppy and slow. My pc is custom, AMD FX-8320 Stock, MSI R7970 Lightnting, Windows 8.1, 8G ram. Disabled steam overlay also, BF4, Watchdogs all record fine, i've gone from AMP APP to AVI and still no different, using Catalyst 14.4 as 13.1...