Arma 3 lagging cpu

[Randall421]

I recently re-opened an arma 3 epoch server on a VDS hosted by NFO. Last time I rented from NFO I was able to run multiple epoch servers flawlessly. Now that I re-opened the epoch server I'm having alot of rubberbanding issues with just one server using the same set up.

I wrote a support ticket at first because I was sure it was network but after a few tests we found out the network is fine. The guy who handled my ticket suggested that the game may be maxing out a single cpu core which could be causing the lag so I opened the task manager and checked the cpu cores and cpu 0 wasn't maxed out but it was about 80% where all the other cores were at about 10%.

So today I upgraded my plan to the next one up thinking that it relieve some of the stress from cpu 0 since there would be more cores to use but while it greatly improved server fps I'm still having rubberbanding issues and cpu 0 is still about 80% with some spikes up into mid-high 90's.

Assuming that this is the cause of the rubberbanding, I'm wondering if there's a way to force the game to use more of the other cores instead of cpu-0 taking on most of the burden.

[Caliban55]

There is not much that you can do, the main problem lies in the Arma engine. You can try to throw raw CPU power against this, which helps to some extent, but even this will not help after a certain point.
My recommendation is:
- limit the player number to something reasonable (40 - 50 players max!!)
- limit the number of mods/addons and make sure that they are optimized for performance
- if you want performance for a mission, don't use sandbox mods/addons that let the client spawn every kind of object into the gameworld (which unfortunatley Epoch is doing)
- use the startup parameter -enableHT

Apart from that, you can set the application affinity in Windows OS to use multiple cores (-> Task Manager -> application properties, affinity); not that it helps much with the mission/server, if the mission is not also optimized for performance.