Occasional "major" CPU spikes

I first started getting this issue since SU14. Then it went away for a while. Now it’s back and it’s really annoying. It’s definitely the sim itself spiking the CPU, I can see that in Process Lasso. And this is on an 7800x3D and 4090, it’s not performance issue as such. Something in the sim just periodically overloads the CPU completely. Reducing the LODs makes it less bad, but thats not an acceptable solution.

I REALLY hope the CPU/memory optimizations in SU15 get rid of this issue.

Anyone else also seeing this issue again recently?