unity3d – Unity build time jumped from 4 Minutes to 1.5+ hrs

I have a Unity project that normally takes 4-5 minutes to build, but that time has suddenly ballooned to 1.5+ hours; building for Windows… I have seen other similar issues from devs building for Android, but their solutions, where applicable, did not change anything in my case. I cannot for the life of me figure out why or what change I could have made that could be causing the new build behavior. The editor seems to hang on each scene for 20 minutes each doing nothing, then at the end of all that it finally processes the shaders and builds the player. It’s very odd.

My project should not hang on each scene for an extended amount of time doing nothing. Try as I might I could not find anything to indicate why it is happening in the editor logs.