Unusally Bad FPS playing Arma 3 on a Relatively High End PC

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ErvinBoyes

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Dec 25, 2016
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I tried playing a coop mission on Arma with my friend on the Tanoa map which I recently bought. I play it on the lowest possible setting; everything on the lowest and if I can disable anything I do. Even my draw distances are on the lowest possible setting. The only things that stay the same are my resolution (2560 x 1080) and the Sampling (100%). Low FPS on Arma 3 is nothing new but I couldn't even play. My FPS was ok when I stand still and do nothing (it sits at about 60 - 90), but it stutters a bit. The problem arises when I start moving or even just look around. The FPS ranges from about 90 to 3 FPS but is constantly stuttering so badly that it is completely unplayable. It even crashes for a couple seconds occasionally. I don't even think its Tanoa either because I tried playing an Altis life server about a week back and it did the same thing but even worse. The thing is that my freind has an AMD A10 and a GTX 1060, runs higher settings than me and can actually play the game at a decent FPS without stuttering. By decent I mean around 40 unless were on a dense server in which case about 20, so the "Arma is just badly optimised" excuse doesn't really make sense. I thought it could be my ultrawide monitor but I remember moments like this even before I had an ultrawide. All my other games are fine aswell so I don't think there is a broken hardware issue. Furthermore I don't have anything overclocked and I'm 99.9% sure that nothing is overheating. If anyone wants me to run some specific benchmarks (singleplayer, multiplayer, different maps, different parts of the map, or even other games) I'd be glad to. Any help is appreciated, thanks.

_SPECS_

Operating System
Windows 8.1 Pro 64-bit

CPU
Intel Core i7 4790K @ 4.00GHz

RAM
8.00GB G.Skill Ripjaws 2133 MHz

Motherboard
MSI Z87-G45 GAMING

Graphics
LG ULTRAWIDE (2560x1080@60Hz)
4095MB NVIDIA GeForce GTX 970 (MSI)

Storage
111GB KINGSTON SV300S37A120G (SSD)
1863GB Seagate ST2000DM001-1CH164 (SATA)
931GB TOSHIBA External USB 3.0 USB Device (USB (SATA))

Power
Corsair CX750M 750w PSU

 
Solution
ingtar33
can you download and run MSI Afterburner? It makes a log you can upload and I can look at in MSI Afterburner on my pc. This might give me a better idea of what's happening.
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ingtar33

ingtar33

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Dec 17, 2012
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that cpu needs an overclock; Arma3 has been known to beat up overclocked haswell cpus in 1080p let alone on an ultrawide. ARMA3 is a 100% cpu bound title. furthermore if you went from a 1080p monitor to that ultrawide you knocked 1/3 of your FPS off (that monitor has 133% the pixels of a 1080p screen, which means it's a 33% reduction in FPS). If you want to smooth out your experience, I'd bump UP the graphics. Move the load from the CPU to the GPU. GPU driver software is designed to smooth out stuttering when under load. CPU's have no such software. Though your FPS will drop you'll probably find the game more playable.


FYI about the FPS reduction

Imagine you were getting 50 FPS in 1080p
-the number of pixels in the new monitor is 133% the number of the 1080p screen
-this equals a 33% reduction in FPS. so 50 FPS will go to 37.5 FPS.
 
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ErvinBoyes

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Dec 25, 2016
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The thing is the game wasn't even using 100% of the CPU, it was using about 30% if that. I can try bumping up the settings but the problem on the Altis life server was as bad no matter what settings I put it on. Lastly, do you think I'd be fine overclocking it with just a stock CPU cooler?
 
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ingtar33

ingtar33

Glorious
Dec 17, 2012
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Arma 3 is essentially a single core game. the windows process monitor considers all 8 threads a single "unit" so a game maxing out 1 core will only eat up 12.5% of the CPU utilization as far as windows is concerned.

and if you plan to overclock you'll need something better then the stock cpu cooler.
 
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ErvinBoyes

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Dec 25, 2016
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I've bumped up my settings and it doesn't seem to have much effect, here's some screenshots:
https://i.imgur.com/Uz6NTR9.jpg
https://i.imgur.com/q9fLDC8.jpg
https://i.imgur.com/gY9hDQf.jpg

It says its around 20 FPS but I still got crazy stuttering. Also this was in a wasteland server that had about 78 people in
 
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ErvinBoyes

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Dec 25, 2016
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Yeah I've got it. I've realised it could be related to my CPU being at 100 degrees celsius (which I am trying to fix now) but I'll send some benchmarks asap
 
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ErvinBoyes

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Dec 25, 2016
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Well, as soon as I try and do my benchmarks Arma has all of a sudden started to work again. I'll drop some benchmarks if it starts acting up again. Thanks a lot for your help so far I really appreciate
 
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