Optical Flares jumping position randomly

[Swemba]

AE Version 13.5.1.48

I have optical flares following car headlights. Sequence rendered out of C4D with Camera and Null for headlights. Headlights fine in animation PreComp, but Master render comp they jump position over one frame. When I clear cache it still does it albeit in a different place. Sometimes it happens in PreComp too, but it's arbitrarily random when it does. When that happens I just rebuild the Optical Flares layer. All new Effect. Soooo stupid.

Frame-rate between comps is the same.

Anyone know what's up. Just another issue with ATI cards?

[Swemba]

The workaround I had for this is to use lights and have the optical flares use the AE Lights rather than just regular 3D. I think layer render order may of been the culprit since I had to different OF layers 1 for each headlight. This is probably a much better workflow anyway.