Some items weigh more than they should. A walkie talkie without battery is 2kg, with battery is 5kg (this has no visible impact on stamina because it seems that the game always thinks that the radio is 5kg, with or without the battery - the number changes, stamina bar doesn't). A plate carrier is like 25kg, empty. This bug affects a LOT of in game items and is gameplay-breaking, since I can have minimalistic gear, travel extremely lightly and have 15% of stamina. It's unbearable unless the server has a no-stamina mod.
This is a major bug that needs to be fixed. Half of the carrying options are basically gone (I cannot carry a large backpack and a vest because that already means my stamina goes down in half - and then if I fill these with items, I have no stamina at all).