Hey guys,
I built my PC about 2 weeks ago, but I've noticed its running sub par in games, but my scores are average for a 1080ti in Unigine Superposition. I've noticed lower than 60 fps (ultra settings) in games like Fallout 4, GTA V, Metal Gear Solid V, Battlefield 1, and most shockingly, Minecraft! My friend runs these game better than I do with a 1070.
EDIT: I am running the current Nvidia Drivers but previous versions reveal the same results
I have a:
Ryzen 5 1600 3.2 GHz CPU (Stock cooler but temps are alright)
EVGA Geforce GTX 1080ti SC2 iCX Cooling
2 sticks of 8gb G.Skill Trident Z RAM @ 3200 MHz
EVGA 650W PSU
Samsung 850 EVO SSD 500 Gb
1 TB WD HDD 7200rpm
ASUS Prime x370-Pro MB
Dell 1440p 144hz G-Sync Monitor