When simulating on Linux for long periods of time(around 4-5 hours). the simulators frame-rate drops slowly until restarted. Is this intentional? or is this a performance issue?

Besides that love this! This is the best ai simulator i have seen to date.

Certainly a reduction in framerate isn't intentional, but assuming your population picks up steam over the course of that time it's inevitable. Nothing eats up frames like more critters! However if you are restarting the program and loading a save from just before you restarted, and seeing a difference in framerate with the same population, then that's unexpected.

My critter population changes and stays around 100 so frame-rates should be high. I am going to try to look into it as the frame-rate gets down to 5-20fps and i have a feeling that slightly spoils the simulation! 

Ill try to take a video or show what i am talking about as i already restarted the simulation. I do not think it is a memory leak though. No ram was leaked.

Also this does not go away until restart aswell.