IWYU takes waaaaaaay longer to compile?

Yep, .h files have no includes with all forward declaration.
.cpp files have includes.

But, I took all my old code (used a diff program to get all my new changes) and swapped back to not using IWYU.
Like before it compiled every single header (110 of them) but did so in only 43 seconds as apposed to 10+ minutes.

Unsure why IWYU compiled each header so drastically slow for me, but I’m no longer using it so it’s no longer an issue.

Thanks for the help though!