I still don't believe "Engine Mods" are the answer to lag, as for me at least it's the handling of segments that causes the worst lag spikes along with other onscreen anomalies.
All is fine with Signs style boring flat square room segments, but as soon as you begin to add shape and detail via segments all begins to go wrong
I don't so much believe it's all down to the engine, but more that we (well me at least) just don't know fully what is and is not allowed regarding segments (and more) as there just is not enough documentation on the engine.
I really do believe FPSc has been out long enough to warrant some in depth documentation on the do's and don'ts along with explanations of all the settings in the setup.ini and .fps/.fpe etc files.
The poke and hope approach is fine in the short term, but only causes problems in the long run.
Your signature has been erased by a mod. The sig needs to be 600 width maximum (x 120 height) for all of it.