We are currently upgrading from Lucee version 5.3.2.77 to version 5.3.9.141.
We have seen that all request have ~800-1000ms overhead now. Request that completed in 100ms take around 1100ms.
The weird thing is that Lucee itself is fast, it completes in <100ms if I log timestamps or check the request with FusionReactor.
I turned on IIS failed request logging and it reports that IIS itself is fast but that the request handler itself is slow (BonCode-Tomcat-CFM-Handler):