@Thunderpie69 If you have any way of isolating just the CC you installed today, I'd start with eliminating that to see if the problems go away, and if they do, just start using the 50/50 method on that specific subset of your cc.
I have a "newly added" subfolder in my mods/packages folder where I always put new cc until I can test that all is well playing the game after new cc is added. I then move it to my normal, categorized subfolders after a few days of everything running properly. It is how I make sure that any new cc can be easily identified.
Absent that, if you enable being able to see "date created" in windows explorer, that should show the date that you originally added it to your pc and help you isolate just the new stuff. Not sure about other versions of windows, but in windows 10 "modified date" is what normally shows by default, and that will be the date the cc was actually last modified by the creator, but "Date created" should show you when you actually added it to your pc.
Edit: Crud...I just realized you talked about the launcher and downloads, which means you installed the CC through the launcher rather than to your Mods/packages folders. Don't know how to easily identify and get rid of the culprit when you install cc that way, it's why i literally never ever use that method. When you install things through the launcher it bundles them together I believe, making everything I originally said null and void.
I second what @treynutz said...always use the multi-extractor and install cc that way, not with the launcher; that doesn't help you for what you've already done though. :-/
