I thought I’d mention that I managed to get renderdoc to work as a *.usf and renderer debugger!
The creator of the software actually messaged me and helped me sort out why I was having problems, so incredible amounts of Kudos to him!
You should all definitely check out his as the software is now open source too 
https://.com/baldurk/renderdoc
Anyways, I made a small tutorial on the wiki if someone other than me is struggling with this.
Here is the link:
I hope this will be useful to someone 
Best regards,