Burn BluRay FCPX Troubles

FCPX 10.2.3

OS X El Capitan 10.11.5

I'm attempting to burn to bluray directly from FCPX. It gets to 66% and then stops. Create Disc pops up in my tool bar but it turns to "not responding" immediately after. I've tried a few of the troubleshooting techniques (restarting FCPX, restarting computer, burn a different project, render all media, add a logo and remove in the settings, etc) but it won't get past the 66% and create disk stalls. Normally it eventually kicks through after trying one of the myriad of random options but I'm on my 20th burn and no luck.

I do not have compressor, I'm hoping to find someone that has a little insight on how they've fixed this on their end.

Thanks for your time and help.