Unity - Stuck in Build 7/11 Light Transport - 1 Job

Same issue here, looking at a bake that was stuck at "7/11 Light Transport | 121 jobs" for a while, like an hour. (Baked resolution is at 25 texels and indirect is at 5, so I thought it would go pretty quick.) Though just as I was writing this the number of jobs started ticking down, and is at 115 now.

This is a warehouse scene, so a decent-sized open space with lots of windows, and some simple backdrop warehouses outside the windows. No big terrain, and I set the "Scale In Lightmap" on the distant stuff to be 0.1 thinking that might speed things up.

Had at one point Final Gather checked, but I unchecked it thinking it might also speed things up.

And suggestions to make this a little less tortuous a process would be most welcome!

Version 5.2, same thing is happening. 7/11 Light Transport | 1 Jobs take like forever, while the scene is very simplistic.

This is a bit over a year old. Not sure how things change in 5.4 with the new enlighten... but if you're stuck at 7/11 I find it is generally because you have one mesh that is too long. If you have a large plane you are using to block or bounce light, try taking it off static.

I know this isn't really a fix, but if you're not bothered about having the global illumination effects and just need the basic lighting built then you can disable Baked GI as well as the Realtime GI

lightmap res is also ultra high, start with something like 8. and some static object have a message when they are to large o the lightmap. 7/11 is alway intensive. Check on the scene viewport Baked Lightmap it shows you all the checkerboards and baked maps in preview.