[jthorpe]

and it added the 3 new DVD's withing 5 to 7 minutes ... course the Ember Test folder only had the 3 new DVD's in there and not my whole library, so I don't know if that is why it finished so quickly

Sorry, but scanning 3 DVD on a local drive should be done in SECONDS!
 

Also, on the test that I did with using the local drive in my desktop, I did have the module "Notifications" turned back on... so that doesn't seem to be the cause.

The problem with the Notification module is that every notification will be displayed as single "dialogs" and sometimes they no longer fade out because of the large number of "dialogs". In your logs a saw a hugh time gap between a notification call and the next step. So that's the reason why my first idea was to disable the module.
 

file named "profiles" as an XML document

That has been added to read which profiles has to be set as "load as default profile" instead of selecting the profile every time you start Ember.
 

The Temp folder is empty

Usually the temp folder is used to cache previews/thumbs and downloaded images in full quality. Image caching for movies and moviesets it's nearly useless (and disabled by default) but it's very usefull for tv shows because of the actor thumbs for episodes (usually they are the same for all or many episodes and Ember has to download each image again and again if the cache is disabled; that's the reason why image caching for tv shows is enabled by default). But that's also not the problem with your issues.
MyVideos24.emm was the old database, MyVideos46.emm is the upgraded version for the latest version of Ember. *.emm_tmp is the file that will be created while upgrading an older DB to the latest version (and should automatically been deleted after upgrade), *.emm-journal is the temporarily created "DB of changes" if several changes are in the "pipeline" (e.g. while scraping multiple movies) and not already commited by the code.

Do you run an antivirus software on your system?  

What settings effect the EmberAPI.scanner? 

I did make a copy of both the Ember Media Manager folders on my C drive. I did this to try deleting the database files (the MyVideos24.emm and MyVideos46.emm, etc.) and if Ember wouldn't load, etc. I'd have the original to fall back on. After copying the Ember Media Manager and Ember Media Manager BETA folders, I went into the Profiles folder and deleted both the MyVideos24.emm and MyVideos46.emm and MyVideos46.emm-journal. I then restarted Ember Media and the file sources was empty (as well as the titles in both the Movie & TV sections). I added the file source paths back into the File Source section of the settings and it took roughly 1/2 of a day to add the 1990 Movies and 271 TV shows. I added a few titles using the local disk and it took no time at all. I then deleted the local source path and copied all of the files over to the NAS drive and added 15 new ones to the NAS drive as well. 

After adding the 15 new titles to my NAS drive, clicking on Update Library at 12:34 AM on 05-17-2020 has added 7 titles (out of the 15) so far (current time is 9:12 PM). Looking at the log while the Update Library is running, I'm noting that it scans Title A and it comes back skipped as it has already been scraped (has the extrafanart, extrathumbs, .actors folders) all these 3 have the same time... now before it starts to scan Title B there's anywhere between a 1 minute to 3 minute time lapse between scanning Title A and starting to scan Title B (for example scanning Title A shows a time of 38:35.8 but scanning Title B shows a time of 40:57.7 and it shows "EmberAPI.Scanner" in the Logger section). 

Here's the 3 most recent logs: https://drive.google.com/open?id=1Nzar0T...qECwmUPzNR

The log for 2020-05-16 is after I deleted the MyVideos files and it looks like it is around 3 seconds or so between scanning Title A and Title B, vs. the log for 2020-05-17 (which Update Library is currently running for this log) show around 1 to 3 minutes between each title. 

For more clarification, I copied the contents of both Ember Media folder that were on the C drive over to a thumb drive while Ember Media program was closed. And instead of restarting it should say starting Ember Media after deleting the MyVideo...emm files from the C drive.