Testing 246: Entering Creative world cause player to stutter initially

[Simoyd]

The green line is UDP.

it appears to drop completely when you go through the portal.

Boundless will keep trying for a second or two before giving up and switching to TCP.

@lucadeltodecso

Udp is used for game inputs to server and will keep sending the last N frames of input until server confirms receipt, so any random packet loss only delays input by 1 frame, but the server is generally expecting to receive the inputs ‘within X frames’ so an extra 1 frame delay is fine. Disabling udp means a random packet loss could add an extra roundtrips of delay, much longer than 1 frame ~ aka much more likely to cause rubberbanding.

The game falls back on TCP if it thinks UDP is failing, but realistically only ever seen this in cases where TCP would just fail to work well enough anyways, but was kept in as a ‘just in case someone has dodgy routing of udp’

As to why the UDP is dropping though I’m not sure. I assume it’s a server issue because multiple people are seeing it.