Hello,
I cooked the TestMap, which I think a majority of modders use for testing in the editor. I became annoyed by the long loading times of TheIsland when I had to test my mod in the game. That is why I made this map, just cooked the TestMap. It is loaded within a few seconds so you can test your mod really quick.
Link: http://steamcommunity.com/sharedfiles/filedetails/?id=664681320
Hopefully you will have a more efficiently way of testing in game now!