What are the suggested timeout and instance configurations on the server site for the VSP Engine Tools (Geoprocessing Service Properties)?

The timeout settings are pre-configured by the VSP Engine Tools post installation process:

• min number of instances per machine waiting for requests if service is started = 1
• max number of instances per machine alive at same time if service is started = 2
• max request processing until timeout = 1800 (30 min.)
• waiting until timeout for fetching a process to handle a request = 300 (5 min.)
• idle time until instance shutdown = 1800 (30 min.)

These values can be updated at any time. See https://enterprise.arcgis.com/en/server/latest/publish-services/windows/tuning-and-configuring-services.htm for more information.