Comment by LoganDark

Just so you know, a process pinning the CPU at 10-20% on Apple Silicon doesn't even cause any perceptible impact to multitasking. I've pinned the CPU far higher and not noticed anything like this, so it's definitely not that issue. I sometimes forget workloads are even running because the rest of the system feels so perfectly fine even when the fans are running full tilt.

This causes big pauses and stutters system-wide, which is not consistent with any level of CPU utilization alone.