HE slow again

My HE hub is responding painfully slow again. Web page takes 20-30 seconds to load, and all of my automations are lagging. Everything processes, but again we're talking with a 20 second lag.

I haven't done or changed anything with the hub in a while. Is there a way to tell what might be leaking memory, or hogging CPU? Top for HE? I'm not seeing anything particularly in the live log. This is 2.16.118. I'm upgrading to 2.17.118 and restarting now.