Typical baking time for navigation on large terrains?

I have 36 1000x1000 terrains and I am trying to bake my navigation, but it’s been running for about 12 hours. It seems to go along pretty well until it hits “12/16 bake indirect 78 jobs” and then the CPU drops from 80-90% down to 50% and has been running that way for 11 hours. Is this typical on large terrains? Im using Unity 5.3.5f1 on a MacPro 2.7Ghz 12 core 64Gb ram.

I previously had similar issues baking GI, but tuned some settings, changed my camera culling, and mostly got lighting bake time down pretty good. Are there similar settings I can look into, or a tutorial about advanced navmesh baking I can look at that will help guide me with similar changes? Thanks!

Never mind… I’m either an idiot or have been staring at this same screen too long. My GI settings somehow reverted to the defaults. I went through and changed them back and my bake time is back down to 15 minutes. I don’t know how or why they changed, but they did. In any case it’s working again. Sorry for the noise! :stuck_out_tongue: