Laptop update is always >50GB

Summary

Desktop update: ~2GB. Laptop update: >50GB. almost every time.

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Other

Steps to Reproduce

  1. Update my desktops after a sudden patch night.
  2. Update my laptops after the same patch.

Expected Result

  1. First device pulls patch from EOS…
  2. Subsequent devices pull patch from both local and EOS.

Observed Result

  1. Desktop pull patch from EOS.
  2. Laptop takes forever to check update, and then instead: likely pulls full game from EOS due to timeout?

Platform(s)

Windows 11

Additional Notes

This must be costing Epic SO much money in bandwidth.

Without reading your logs, it’s safe 2 assume 2 things are going wrong here:

  • When resuming from sleep, EGL is taking too long to refresh.
    • It starts checking for updates too early during this phase.
    • It takes so long that it just gives up the checks.
    • The checks now ignores whatever exists, and kicks off a full re-download instead.

This would explain why the desktops never have this issue;
I have sleep disabled on them: Windows always starts fresh, and EGL wont be opened until the OS has settled.


No Local sync is the second exacerbate: It might be time to look into BTS-style local-sync: Your CDN would already have “chunks” that it distributes, and I assume EGL just asks the CDN for each chunk…
EGL’s could/should also broadcast mDNS on LAN so other devices can learn they exist, and then those devices can simply pull any relevant chunks they may have locally.