Iron amount for the most of recipes feels too much

I'm in my first iron age right now so I don't want to spoil progression for me or anyone else.

After bronze age grinding iron feels little too much for me considering that I get 35-50 scraps from one sunken crypt, I have to deliver it to my base with forge without portals and all I can get for this is one or two of items. Grind in this part feels overtuned a bit. Forge improvements feel OK to require 20 bars though.

If it gets somehow better or I missed something, please set spoiler tag in replies.