Why is this set-up running so slow...

Thanks but almost all of the items on the list that apply to me have been tried. My question is that given my set-up there really should be no slow down at all. I also tried unplugging my HDMI and sound outputs and all ext. drives. Still a really bad lag. I also run the memory-loss app that cleans up all loose memory but 32Gb should be fine anyway.

I can only think that the G-Raid is to blame, but these are one of the top drives to use for editing. I am thinking to look at other options but its an expensive one!

Yes, new user and as a guest and I get better performance - as expected. I say that because I have two other workstations used by assistants so I can see that my Macbook Pro it is running better than my set-up.

My point is that should I be expected to have create a new user every time FCPX drags? I did this before and it works for a few months then quickly go back to slowness. It also takes days to troubleshoot and/or create a new user and lose all the original settings.

Should the tag-line for FCPX be "Works on brand new machines best".

The Mac Pro I use does not run any email and I use a Macbook for the internet just to safeguard my workstation.

I understand the new user setup, but if this is the only way to get FCPX to run at a useable speed then it's got a flaw. It should work in a normal environment like mine.

I would add that I am using Colorista III for color correction rather than Apple's color effect and I think this is adding to the slowness. I posted on their forum, so hope to get a response.