Yep, that was my problem. Rolled back drivers, no more CTD during loading. Glad I saw your post. Wasn't looking forward to disabling all the mods, etc... Thank you!
Well...I was having the same troubles; CTD after load screen. Had installed (what I thought was) the new F4SE and was still getting the crash. After seeing your comment above, I went and checked. Damned if I hadn't just downloaded v14 from the archive instead of the current version. Must have snagged it by accident before v 15 hit and didn't realize it. I feel like and idiot but glad I was able to figure it out.