This will let you toggle the HUD on/off ingame with caps lock. You can also toggle the flashing from loot objects with K. (Menus will disappear when HUD is toggled off, so just toggle it on when using menus)
This game uses EasyAntiCheat which blocks wrappers like this, so if you haven't already you need to first disable it with a modified .dll which can be found here:
thank you