I am trying to perform a spatial join between a very large polygon layer and a very large point layer in QGIS. I left the process running overnight but there does not appear to be any sign of progress. I thought it might be an issue with my CPU or RAM but when I open task manager QGIS is only using 266% of the CPU and the memory is only 35%.

Has anyone else experienced a similar problem and if so has anyone solved it?

  • 3
    What is "very large"? 266%? Do the layers have a spatial index? How complex are the polygons?
    – MrXsquared
    May 1 at 17:46
  • 1
    A bit more context could help understanding the problem.
    – Babel
    May 1 at 21:30
  • When I perform the spatial join it says there is no spatial index. The polygon layer is 396.25 MB and has a feature count of 136,903. The point layer is 58.44 MB and has a feature count of 95,174.
    – Ian Moffit
    May 2 at 5:18

1 Answer 1


I figured out the problem was that a software problem called docker was running in the background even though it was not saying so in task manager. Once I uninstalled it, the spatial join worked perfectly.

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