zstd compression is using a ton of CPU while we are creating workspaces

During scale tests, when we create new workspaces, CPU utilization spikes up to our limit:

From Pyroscope:

In Coderd, zstd compression is used for the site handler:

	// Static file handler must be wrapped with HSTS handler if the
	// StrictTransportSecurityAge is set. We only need to set this header on
	// static files since it only affects browsers.
	r.NotFound(cspMW(compressHandler(httpmw.HSTS(api.SiteHandler, options.StrictTransportSecurityCfg))).ServeHTTP)

Annoyingly, whatever HTTP requests are being made, we are not recording the path in the coderd_api_requests_processed_total metric