What could be the cause of bottlenecking?

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Phillies1727

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Dec 31, 2014
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When I play Arma 3 singleplayer or lan I get a solid 40-70 fps on everything maxed out, but when I go to multiplayer I cant get more than 35 fps. Could there be a bottleneck issue?
CPU:Amd fx 9370@ 4.4 ghz
GPU:Nvidia gtx 760
PSU:700w
Memory:16gb
2tb hdd
Motherboard: Gigabyte 990fx ud3
 
Solution
Darkbreeze
To start with you don't have an extremely powerful GPU. The 760 is good, but not great. I'm also skeptical about your PSU as you don't indicate a brand or model, which usually means a low end budget unit. What is the model number? A cheap PSU can seriously affect GPU performance. It may also depend somewhat on your internet connection speed. The throughput of your network connection could be seriously jamming things up if you have a slower connection.

Plus, your PSU doesn't come ANYWHERE near the recommended minimum for that CPU. AMD recommends a very good 1000w unit as MINIMUM. We generally recommend having a VERY GOOD 850-1000w unit for the FX-9XXX series chips.

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Darkbreeze

Darkbreeze

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To start with you don't have an extremely powerful GPU. The 760 is good, but not great. I'm also skeptical about your PSU as you don't indicate a brand or model, which usually means a low end budget unit. What is the model number? A cheap PSU can seriously affect GPU performance. It may also depend somewhat on your internet connection speed. The throughput of your network connection could be seriously jamming things up if you have a slower connection.

Plus, your PSU doesn't come ANYWHERE near the recommended minimum for that CPU. AMD recommends a very good 1000w unit as MINIMUM. We generally recommend having a VERY GOOD 850-1000w unit for the FX-9XXX series chips.

 
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Darkbreeze

Darkbreeze

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I really doubt the CPU is the cause in this case. Unless it's due to the fact that the CPU is severely underpowered, and if it's a cheap unit, is probably expressing itself across the system with noise, ripple and voltage spikes which affect everything. This might not be as apparent until the GPU and CPU are under an extreme load, as in high multiplayer battles.

It's likely a combination of all those problems with the system though. Lower end GPU, underpowered CPU and possibly a poor PSU, along with the added possibility of an internet connection that can't keep up.

You might even try seeing if there are updated LAN drivers for your adapter or if you can find any offloading tweaks for it that shift some of the load from the cpu.
 
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bystander

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Dec 9, 2009
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I did a Google search on "arma 3 multiplayer FPS cpu" and came up with lots of results that multiplayer is heavily CPU bottlenecked on that game. If you want good FPS on multiplayer, you need a better CPU. All the Arma games have been as such.

https://www.youtube.com/watch?v=Iz9RKnxhlUo

He was getting 90ish FPS in single player, with 60%+ usage on the GPU.
In multiplayer, the FPS drop into the teens, and GPU usage is under 20%. Clearly this thing is severely CPU limited in multiplayer. There are tons of posts on it.

I don't know about Arma 3, but the previous games were single threaded on the CPU, making it pretty much required to have an Intel CPU for good multiplayer results.
 
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Darkbreeze

Darkbreeze

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Yeah, Arma's a hog. No argument there. But there are likely some solutions that will mitigate some of that, like having up to date drivers. I've seen games that drove extremely high CPU loads on one version and dropped more than 20% of CPU load simply from updating the drivers or clearing out old drivers and installing the drivers fresh.

There's not much of any where to go as far as upgrading the CPU so it's either clock it higher to see if that helps (IF you have adequate cooling to do so, and a capable motherboard) or see how much some of the other issues resolve it.

And again, I really doubt that 9XXX series chip is underperforming compared to the GPU.

I also agree that there is clearly a code issue using multiplayer on Arma, so I'd try some other titles and see if you have similar issues.
 
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bystander

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With your CPU, some games won't be as easy to get that high in multiplayer. Games like BF3 did not like that CPU, though it was good enough for some, but people kept seeing dips into the 40's with it. Others like Neverwinter Nights (MMO), WoW and others also had similar limitations.

But it varies from game to game, but one thing that seems pretty consistent, online play has higher CPU requirements than offline games, when both are offered.
 
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Phillies1727

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Dec 31, 2014
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Also my internet hasn't been good lately and it is sort of weird I can go on lan and play a huge battle with my friends with high frames but dropped frames when playing multiplayer
 
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