Man fuck quoting on the phone, too much scrolling.
I'm having more luck with dmc's performance than remember me at higher res, both games run good but remember me stutters when running through the level, could be just me running out of vram or something, but I choose to blame u3e
Check you haven't got SSAA enabled otherwise if you're downsampling you're running it at super-super high res. I was good for 3200x1800 on a single 780 with 2xSSAA and 60-80fps right until the last level where what ever reflection technique they used pulled me down to 40fps. Disabling SSAA for that scene brought me to 80ish so it's linear.
What makes me chuckle is the love the DmC and Remember Me ports get. Sure they run great but they're forward rendered DX9 titles on a mature Unreal Engine 3 base, odds on they're going to run well. It's usually only when UE3 is heavily modified, had some killer effects or Physx going on or uses a DX11 renderer that performance costs go through the roof. One site was holding DmC up to Crysis 3 in regards to port quality.