there is 10% of the exp needed for lvl limit thats why u dont get alot exp...
to make this limit to 1 lvl per monster u should start ur
svMapServer.exe -m mapnumber -testserver
for all the maps that have monsters.
with -battleserver there is no limit but there are few problems running it like this
when u die u respawn on the map, you cannot log out when on map with -battleserver