Further profiling of "unaccounted gpu cost"

Hey all,

Doing some profiling for a project I’ve been working on. Im noticing my performance slowly degrade as time progresses. My scene runs around 90fps when in editor, but once in game slowly drops down to around 20. I believe this is due to the AI I spawn, but I can’t narrow down exactly what the issue is as the only thing I can really find is “unaccounted gpu cost”. I was hoping for some clarification on how to approach this, as I’ve never encountered “unaccounted gpu cost” being this high.

Here is the stat startfile output: https://drive.google.com/file/d/0B_xjQ7vVk-cbMmlOYlpwNF9SVnM/view?usp=sharing