So, what have we already done since we converted ( which took about 1 day )?
The first task was to move the UI from its current state to a D2D method. By passing the rendering through this process we saved 180fps. With our previous system we would take a massive hit from 300fps to 100fps when a UI element was opened. Now, when we open a UI element we are getting 300fps to 292fps. This is just ONE of the changes that we have made in the two days that we have converted over.
So, if you are thinking of going with a SlimDX system you should really look into SharpDX instead. Good luck and I hope this post helps others who are starting out.