A* Pathfinding Project

Can't Enable Multithreading


Hi, I’m having trouble enabling multithreading in the A* Inspector. Regardless of which option I select for the “Thread Count” field, I still see a message immediately underneath that says “Using a single coroutine (no threads) on your machine.”


I’m developing on a Windows laptop with 4 cores, using A* Pro version 4.2.8 in Unity 2019.2.17f1, and I have a single Layered Grid Graph set up in my project.

Is there anything else I can try to get multithreading working? Would updating to 4.2.11 help? Thanks!



Are you perhaps deploying for the WebGL target? WebGL cannot support threads so they are disabled for that target (even in the editor, to make testing more accurate).


That was the problem! Sorry for making a thread for such a simple issue. Thanks!