CHR on GGCP slow download

Thanks for testing! Since 7.16.2 and 7.15.3 give the same results as 7.18.1, it doesn’t seem to be a version-specific issue. But the fact that 6.49.18 performs so much better with the exact same settings is really weird.

It might be worth checking if there have been any changes to the default TCP settings between these versions. Have you tried adjusting TCP window sizes or disabling FastTrack to see if that makes a difference?

Anyway, I’ll take a closer look and see if I can spot anything specific in a couple of customer instances when I get the chance.

That is a new empty CHR installation, its firewall rules list is empty, so there is no FastTrack at all. I haven’t tried to adjust tcp window size, but trying to set MSS to a lower value via a mangle rule results in even worse speeds.

Sadly, that issue still exists in 7.19. Were you able to check your customer instances? Are they working fine or do the have the same issue with slow download speed?