the prime constraint and number 1 problem with "old gen" is. lack of power. as in cpu graphics card and the primary element being ram. ie the memory. lol the xbox 360 has half a gig of ram which is ridiculous to even think or consider. it amazes me on the basis how bo2 runs on such an under powered system! but. with xb1 and ps4 there should be no frame drop really. even if you lit up a horde with say mustang and sally. there should be no frame drop. if it happens that means the hardware the graphics card sucks if it cant maintain good frames. in xb1 or the ps4. or it could suggest bad optimisation lol of the game itself when its due to drop or come out which wouldnt surprise me one bit in all honesty. now on the other hand. when it comes for pc. there should be no issues with frame rates but you may need an absurdly powerful machine to prevent any frame drop or at least 8 gig of ram a good graphics card and motherboard not to mention a powerful or maybe above average cpu im thinking