Performance Graph Strange Behavior - Low FPS *Solved: Dynamic Reflections

Getting very strange performance issues recently, as if the GPU is giving up 50% of the time..

You can see here on the performance graph the time differences in the reflection pass, and shadow pass etc.. they are outrageous! Not sure where this is coming from or what it's doing but this is pretty new to me:
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I deleted 341 lights in the map, all casting 2048 shadows. Made zero difference.
Deleted untold hundreds of decals on roads and hills, no noticeable difference.
Shadow distance from 600 to 2600, EXTREMELY SMALL difference.

This was when running 6 individual cars, but I duplicated the same car 6 times and the performance didn't change to my surprise
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I've found that the problem is Dynamic Reflections. When they are off the choppiness no longer shows up. It's most likely related to "update rate."

Yup.

On lowest update it's choppy, on highest update it's smooth - just not in the FPS department =D

C'maawwwn Vulcan! haha

 

I reported that it was in fact dynamic reflections causing it! The "low update" setting was exactly the cause. I always run high/fast update so I had never noticed it before. =)