Board Thread:Questions and Answers/@comment-63.227.133.226-20150614164647/@comment-38.106.114.190-20170425164138

Found this on the official site.

Islands Not Generating
You sail along and don't see any islands for a while. There are a couple of different causes for this. If you are far away from the starting island (near 50 sextant units or more), islands start to appear in large random clusters with lots of ocean sometimes between each cluster. This means that you can sometimes sail for quite a while without seeing an island. If you have low frame rate, it could be that the islands are taking a while to generate, and you pass them up before you see them. You can adjust the Island Spawn distance, Island Gen Target FPS, and Min Island Gen Speed in the main menu options to correct this

https://saltthegame.com/bugs/buglist/