unrelated, but while we're on the topic of navigating inventory, I found this helpful trick for selecting items in situations where you need to hand over an item rather than use it on a target (for example crafting leves, supply missions and collectible turn-ins, as well as many quests)
- from the "hand over" window, don't press A (X on PS4) on the requested item's icon to navigate inventory, instead press X (square on PS4) to open a popup with only the relevant item(s) displayed, and select that, no navigation required.
this works for every situation where you need to hand over something and functions like selecting a weapon or piece of gear as an ingredient for some crafting recipes that use finished items as ingredients
I thought others might enjoy the tip

it's a big time saver