Deferred rendering reduced frame rate to 30 fps

So I have been making my game for about 4 years now.
And I still have a lot to learn when it comes to the graphics engine.

I am using Gaia and CTS shaders and deferred rendering is preferred.
I read up on deferred rendering so I figured I would give it a go.

All seems fine in the editor frame rate is about the same as it was when using forward rendering.
It's when I build the game that I see a difference.
I get like 160 fps in forward and 30 ish in deferred.
Am I missing a setting here somewhere or does it normally perform that badly?

I am using a Geforce GTX 1080 FTW card.
Intel I7-5820K CPU @ 3.30 GHz
64 GB RAM

 

I can say with some confidence that you shouldn't be losing that much performance. Try building a debug version and attaching your profiler. If you're unsure, post your profiler results back here .