If you are evaluating LispWorks, then the following notes might prove to be useful.
firstname.lastname@example.org) will be happy to answer any issues you have.
profileto narrow the problem. See the LispWorks User Guide and Reference Manual for details of these diagnostic functions and macros. You should also report it to LispWorks support, as LispWorks is efficient in general and we do not expect performance problems.
LispWorks Release Notes and Installation Guide - 19 Oct 2017