Gtx 1080, 4k UHD benchmark Rise of the Tomb Raider i5 4690k

gtx 1080 (Gainward Phoenix) i5 4690k @ 4.4ghz, benchmark Rise of the Tomb Raider 2160p resolution, max default settings. Shadowplay has again really impacted upon the frames when recording at 4k (worse than my last vid), I get 53fps without shadowplay. So it is a drop of about 5fps or around 10% Unsure as to whether i should record in 1080p to show more accurate numbers or to continue recording in UHD as it really impacts upon the numbers.