Have only tested a GPS once and on a server that only uses 3d maps (Spaggies Miserable). So old school read numbers on GPS and plot position on map.
The coordinates were 1 decimal place out (I.e displayed x - 0.44 y - 0.12 should actually be interpreted as x - 4.4 y - 1.2).
Didn’t use GPS again but can report it makes a great clunking sound as I threw it against a wall.