Theres a reason why people usually graze over such things, its because when you have a problem with only 1 program on your computer everything else works fine you dont assume that something is funky on your end especially if you can run other high cpu usage games without problems plus lots of bad customer services adopted this lazy "check your computer" type of messages what ignore anything you write and provide you with basically a "fix it yourself" answer.
I mean lets go over with Hardware specs, 16gb ram, GeForce GTX 750 Ti latest version of the driver, 3.4ghz quad core, win 7 according to the recommended tabs this game should run without problems. The Cpu usage never really goes that high as for the optimization of this computer i have no idea what i have applied to it anymore.
On my brothers computer we have 12gb ram, Geforce 610 (or something below GTX 750) latest version of the driver, 3.2g quad core, Win 10, also on a sidenote for an experiment we installed this game on my fathers old laptop Win 7, 8gb ram 3ghz dual core, built-in noname 1gb videocard and while the game lags as no tomorrow this specific spawn area actually works.
Ok, so you've listed off bare minimum stats for the CPU's, and haven't listed a single GPU that meets recommended specs.
you dont assume that something is funky on your end especially if you can run other high cpu usage games without problems
Go ahead an name one other game that's as demanding as this one. I challenge you to find one. Especially one that supposedly runs without issues on your systems.
That's fine though. Here's one of my recent test builds.
Motherboard: Intel DG33BU
CPU: Intel Core 2 Quad Q6600 @ 2.4GHz
(4c/4t)
RAM: 8GB Dual-Channel DDR2 @ 800MHz
GPU: MSI GeForce GTX 770 2GB Twin Frozr Gaming OC
Storage: 1TB WD Black
Speccy
Now in this machine, the difference between a bloated system and an optimized system was 45FPS for bloated, and 60FPS optimized in a18. In a19's borked b169 update, it was 36/55. I can test it again this afternoon and I'm sure we'll see that 55 go up quite a bit due to recent optimizations.
Do I have zeds spawning in front of my in POI's? Sometimes. When I'm monitoring system usage I see that there is definitive peak in CPU and RAM allocation when this occurs. Given that the PC is at min spec, and I'm pushing the limits of the video settings for the hardware, I understand why it's happening. If I lowered the resolution from 1080p to 720p, and adjust the graphics a bit it's no longer an issue. Why? Because the CPU has to work less, and there is lower RAM allocation.
So some questions for you here.
1. Do you have any PC's that actually meet recommended specs?
2. Have you fully excluded the client from security software?
3. Have you cleaned up these computers and shut down all unnecessary background tasks?
(I mean since they don't meet recommended specs, it's basically a given that you have to.)
4. Have you actually looked at the minimum recommended system requirements?
(Not minimum required. That just means you can start the game and play it with probably 30FPS.)