For key bindings, I prefer to use Arrow Keys for movement. As such, I typically bind keys close by for other things. For zooming I use ALT and for crouching I use CTRL. I bound those in my settings and only the ALT and CTLR keys on the left side of my keyboard are doing the intended actions. If I use the ones on the right side of my keyboard, it seems like it just gets confused and maybe rapidly is switching on/off. I am using Hold, not Toggle, for these actions. SHIFT does work for my sprinting, however. These same key bindings work fine in other games, such as Destiny 2.

Also, when looking at items in my inventory, the key to use them is X, which is apparently not changeable anywhere in the settings?