New error causing extremely slow project load and start

Unity Engine
1

Sorry if this is the wrong place for this, I’m new to this forum.

I’ve been using 2018.1beta for about a week now and this just started today, but whenever I load a project or hit play in a project it takes a LLLLOOOONNNGGG time like 10 minutes while the UI is hung and unresponsive before finally loading/starting. The only real clues in the console are these messages which google is totally not helpful with:

InvalidOperationException: Collab_ErrCannotGetRevision
UnityEditor.Collaboration.Collab.InternalGetRevisionsData (System.Boolean withChanges, System.Int32 startIndex, System.Int32 numRevisions) <0x384ebb00 + 0x00082> in <72b0ed84117a445ab10ab73c57c76275>:0
UnityEditor.Collaboration.Collab.GetRevisionsData (System.Boolean withChanges, System.Int32 startIndex, System.Int32 numRevisions) (at C:/buildslave/unity/build/Editor/Mono/Collab/Collab.bindings.cs:25)
UnityEditor.Collaboration.RevisionsService.GetRevisions (System.Int32 offset, System.Int32 count) (at C:/buildslave/unity/build/Editor/Mono/Collab/RevisionsService.cs:47)
UnityEditor.Collaboration.CollabHistoryPresenter.OnUpdatePage (System.Int32 page) (at C:/buildslave/unity/build/Editor/Mono/Collab/Presenters/CollabHistoryPresenter.cs:210)
UnityEditor.Collaboration.CollabHistoryPresenter.OnWindowEnabled () (at C:/buildslave/unity/build/Editor/Mono/Collab/Presenters/CollabHistoryPresenter.cs:60)
UnityEditor.CollabHistoryWindow.OnEnable () (at C:/buildslave/unity/build/Editor/Mono/Collab/CollabHistoryWindow.cs:57)

I tried deleting all my Unity-related registry values hoping that would help without luck. Not sure what else to check…

If useful for debugging project source code is at: GitHub - TheRealCatherine/StageMechanic: Mirror of the official GitLab hosted project
Nothing major has changed, no new files added (though a few .cs files and a few assets have changed somewhat) between the time before the error started and since. Also the loaded scene is very simple, just a cube and a plane at start.

2

Going by the “Collab” part in those error messages on a hunch I turned off all the Unity Teams stuff in my project and now its loading fine. (though of course my teams stuff now is off) I’m guessing this stuff in Unity runs in the main thread or otherwise blocks the main thread and if it can’t connect it keeps trying for like 10 minutes or something while the main thread just sits there blocked. It’s like “you turned on team support and dag nabbit you are not going nowhere unless we can connect to our servers!”