Sorry, Brad, I haven’t got any detailed analysis. The timeout exception stack traces just list normal activity at the moment the timeout hit. But as I say the trigger was consistently app re-initialisation and running Testbox suites. Normal requests seemed to run ok. Guess that would fit with “compilation issues”, as there’s a lot of “warm up” activity going on in those cases.
I may be wrong about CommandBox. I can’t run the same apps on both stacks (without going to a lot of effort), so I wasn’t testing like for like, but app re-initialisation and test running seem to be normal with CmdBox.