Hi!
It seems the game won't register the junk you collect in the institue HQ correctly. To be exact: Pick up one applicator and you get 1xfiber optics pick another one up and you could see that you have 2 applicator in the junk section but switching to component view the fiber optics is still 1x (where it should be 2x). All right: when you picked up around 10-20 of them drop those applicators and the game won't subtract the fiber optics so when you pick up the "stacked" applicators again the fiber optics will be 10+1 (+1 is the one which stayed in your junk view incorrectly after dropping them). So that way you could easily get as much fiber optics as you want.
Another thing I encountered is a bug related to power armor and companion's special abilities (lockpick and terminal hacking) When I'm in power armor I can fully guide my companion to go there/grab that, but he won't interact with the safe/terminal until I exit from my power armor. Even if I command him while Im in the power armor and exit after commanding him/her he will automatically start the hacking/lockpicking. (So I don't have to re-command him after exiting)
Oh and FYI: Yes, im using the right personnel: Cait for lockpick, Valentine for hacking.
Hope this message of mine will ensure a better/bug free F4.
Thank You!