In coop a weapon can be picked up only once. That's annoying, because in
coop ammunition is sparse and not getting the ammunition that comes with
a weapons make things worse. When `coop_pickup_weapons` is set to `1` a
weapon may be picked up if:
1) The player doesn't have the weapon in their inventory.
2) No other player has already picked it up.
Adaptive vsync is a often requested feauture and easy to implement. Set
`r_vsync` to `2` to enable. This is untested because my system doesn't
support it.
