AC: Origins is one of the most CPU heavy games out right now and for the moment it is probably the worst case scenario for the 4 core/4 thread i5s with dips in to the low 40s FPS regardless of GPU due to CPU bottlenecking in the city areas of the game. Battlefield 1 is probably the second most CPU heavy game, at least in 64 player maps. 4 core/4 thread i5s can do okay on large Battlefield 1 matches eg. mostly hold 60FPS, but they need to be clocked high to do it, which isn't good if you have a locked CPU like the 7400.