fps performance caused by garbage collection?

[Mike Konstant]

The environment that is being simulated has dynamic vehicles moving on a road. The slowdown is caused by lack of CPU time, most likely due to our custom code in the simulator.
Regarding the update time, it is usually 5-6 and jumps up when the frame rate drops.
Further testing that I have done shows that by excluding the moving objects in the simiulation and removing file saving via a thread the problem seems to go away. My question now is what is the most effecient way to save data while a user is exploring in the enviromnent. Currently a Python thread saves the data, is there a method to do background processing withing the API that keeps the fps as high as possible?

Mike