Well, after Arran disabled Criminals can kill Criminals and all those updates to completely remove DM from the server, I noticed some people abusing it in LV, how?
While you're in war and shooting a player, when he get 1 HP he just run and enter any interior, and as interiors are located in LS, you can't kill them due to new scripts. So in my opinion it's evading to be killed by going inside interior > Take medkits > go back and fight.
So my suggestion as title says, disable the ability to enter any interior if you're recently damaged like last 10 seconds or something, so people stop escaping from war to get some HP and come back.