How I cut GTA Online loading times by 70% (GTA fix JSON handler pls)

Posted on by Robin Edgar

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tl;dr

  • There’s a single thread CPU bottleneck while starting up GTA Online
  • It turns out GTA struggles to parse a 10MB JSON file
  • The JSON parser itself is poorly built / naive and
  • After parsing there’s a slow item de-duplication routine

R* please fix

If this somehow reaches Rockstar: the problems shouldn’t take more than a day for a single dev to solve. Please do something about it :<

You could either switch to a hashmap for the de-duplication or completely skip it on startup as a faster fix. For the JSON parser – just swap out the library for a more performant one. I don’t think there’s any easier way out.

Source: How I cut GTA Online loading times by 70%

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Robin Edgar

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