I tend to check on process fairly regularly and today while playing I noticed the system process (ntoskrnel) keeps going from 1%-8% almost in a repeated pattern.(I have a 9900k so if you have a less powerful cpu this usage might be much bigger)
Anyone else noticing a similar thing?
The system process goes to back to the usual 0.3/1% when the game is closed and I’m pretty sure it wasn’t behaving like this a week ago.
I posted a thread detailing this issue here for visibility: Perf impact of 3/23 EAC update is unacceptable
In your thread you say its 10 sec intervals while for me its more frequent.
For me its like every 2 seconds.
1>8% 2seconds at 0.1% and repeat.Always the same repeated percentage in that pattern.
What have they done 
I tested on a wider range of environments today and always see a consistent “yo yo” behavior on System process while LA is running.
The frequency and magnitude seem to differ a bit and the impact on gameplay varies based on multi-core setup. Not super noticeable on 9700k (other than fans ramping up and down), but I can repro client hang during the spike on machines with less cores.
Glad i found this because i noticed it as well and thought it was a hardware problem and then tested a few games and it was only spiking with Lost Ark