Speedup reverts to 1 after some time

Run the sim like

```
➜  ~ roslaunch local_pathfinding all.launch num_ais_ships:=100 random_seed:=89051 speedup:=100 global_wind_direction:=45 wandb:=true
```

After leaving it for an hour, it is back at speedup 1. Probably didn't get written properly in createPath for some reason. 