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Kawumm

[1.1.2] Influence of network lag on race times

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Hey, after some incidents related to lag in race mode and weird finish times, I investigated a bit.

Findings in short:

  • If you pass the start brush with 0ms lag and the finish brush with 1000ms lag, your race time will be registered 500ms slower than it should.
  • Vice versa, if you pass the start brush with 1000ms lag and the finish brush with 0ms lag, your race time will be registered 500ms faster than it should.

Since the impact of it can vary a lot, there is a risk of slightly off times without the player or anyone else noticing. We know of only drastic and obvious cases, but there are likely a higher number of records, when no one was even realising it.

The tests on the video were done on a local server, but I repeated them later on an online server with the same results. Lag was induced by clumsy 0.2 ( https://jagt.github.io/clumsy/ ). I've added the map as attachment to this post.

lattest2.map

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