Bluejax878 :
I'm a total noob when it comes to overclocking, but how do you check Mhz score for your gtx 1080? Maybe mine is underclocked? I'm not sure.
well, still doubt it's the GPU anyway. But, if you want to MONITOR the GPU usage you can use EVGA Precision. There's a steam version but I prefer the other (you login at EVGA to get it).
It's really confusing at first, but you then open it up and look at "OSD settings" in the upper left. Go through each of the settings, starting with "GPU clock" and make sure "GPU1" is highlighted (bright).
You should monitor these:
a) GPU clock
b) GPU usage
c) can do FPS as well if you want here
(set F-key to toggle on/off in game... look at the BOTTOM for the "OSD settings". if you don't set that up you won't see anything in the game)
The GPU clock is dynamic, so drops lower if not stressed hard (i.e. CPU bottleneck). It should be over 1700MHz. Mine under stress with slight OC hits just over 1900MHz.
Your GPU usage should ALSO be high, unless of course a CPU bottleneck. So on LOW settings, if CPU bottlenecked you might see something like 1780MHz, with only 40% GPU usage. Conversely, if the CPU is not a bottleneck (and no other like FPS cap such as VSYNC) you may be at 1880MHz, 94% GPU usage.
CPU?
The easiest way to see if this is the bottleneck is to see if the GPU isn't. The problem with CPU's is that a game might only be able to use something like 3.5 cores out of 6. You can show 60% usage and still be bottlenecked. (reason is mainly that the main GAME CODE THREAD has to run on one single core. complicated sorry.
Also look at the CPU frequency, and ensure all your threads are available.
a) open Task Manager, find the CPU section and show all threads (I believe you should see TWELVE graphs)
b) under load (i.e. Prime95) the CPU frequency should hit roughly 200MHz below it's Max Turbo value (not sure if you overclocked. if not probably about 3.4GHz)
you can also run the Intel CPU diagnostic (google it) to test CPU. shortly after it starts it should also show roughly 3.4GHz in Task Manager... under the graphs under "SPEED". Usually outside of heavy load that will vary quite a bit.
Note that the Intel CPU diagnostic will set to DEFAULT (non-OC) values and you must REBOOT to get your OC back.
**If 3.4GHz is Turbo under load (maybe 3.3GHz), then OC can really help. I've seen people hit 4.6GHz sustained load. That's 35% higher potentially processing power.
*Anyway, I suggest looking at OTHER GAMES and benchmarks for now, then come back to this game.