CPU running at 100% with plugins

Hello!
I got a pretty strange problem:
Lets start from the beginning, I created an RoK Server with Oxide and no plugins, everything was running fine.
Now I installed a few plugins, and the first few minutes is still everything fine, but then the CPU usage rises, till it reaches 100%.
Has anyone an idea why thats happening and how to solve it?
My plugins are: AdminChat, AdminTickets, Announcer, CommandLogger, Logs, Mute and Personal Messenger.

 

I dont think so actually, I removed all plugins, even remade the complete Server (keeping all the save files of course), but still, the CPU goes at 100%.

 

it's normal that the CPU is 100%
but only 1 CPU is at 100% all the others are at 0%
if you have a 4core, your CPU can go at 400%
the % is by CPU

 

The strange thing is, an RoK Server only uses about 5-10% of CPU usage, it still does. But after a few minutes it rises up to 100% and it doesnt slow down!
[DOUBLEPOST=1439920264][/DOUBLEPOST]Update: I just tried something, everytime someone starts playing the CPU usage rises.