Hi,
If you are using ActiveHDL’s VSimSA version 15 with OSVVM Scripting, please be sure to upgrade to version 16. You will be pleased. VSimSA in release 15 limited the stack space to Tcl and OSVVM’s scripts which process Yaml files ran slow. For shorter running simulations (like OSVVM regression tests), the time is significant. For your design, YMMV.