High CPU usage with gala

### What Happened?

Gala seems to be using lots of cpu, every 3-4 seconds it spikes from about 2-3% cpu usage, to 20%, along another 20% of the open app that it currently serves its window management services.

Additionally, the ram usage is high at 140 MB...

### Steps to Reproduce

1. Install gnome-system-monitor (or any other app)
2. launch the app
3. notice the cpu usage going up and down every few seconds

### Expected Behavior

To have lower cpu and ram usage when parked

### OS Version

8.x (Early Access)

### Session Type

Classic Session (X11, This is the default)

### Software Version

Latest release (I have run all updates)

Here's the up and down graph of the cpu usage even when nothing else is loaded