Node graph error logging causes performance issues

[SamVanheer]

Enabling log output for the node graph causes a lot of errors to be logged for some maps (e.g. c2a3d) which causes performance issues that slows down graph generation to a crawl.

The Unified SDK uses trace logging for the messages that cause performance issues but there may still be excessive work done when Unhandled Ent in Path <classname> messages are logged.