Proxmox Repository extremely slow

which mirror do you access? (depends on your location)

Please check with:

> dig enterprise.proxmox.com
 
Server is located in the UK

;; ANSWER SECTION:
enterprise.proxmox.com. 900 IN CNAME enterprise.cdn.proxmox.com.
enterprise.cdn.proxmox.com. 60 IN CNAME de.cdn.proxmox.com.
de.cdn.proxmox.com. 60 IN A 212.224.123.70​
 
212.224.123.70

There are no known issues on 212.224.123.70 - please contact your datacenter support if they are aware of any network issues to this network.
 
Looking at my MTR trace, I'm seeing a high jump on reponse on the last hop to de.cdn.proxmox.com
Hitting the debian repo I'm not seeing any issues.

HOST: XXXXXXXXX Loss% Snt Last Avg Best Wrst StDev
4.|-- be3774.agr11.man01.atlas. 0.0% 10 1.4 1.3 1.2 1.4 0.0
5.|-- be2740.ccr21.man01.atlas. 0.0% 10 1.2 1.3 1.2 1.4 0.0
6.|-- be2190.ccr21.lpl01.atlas. 0.0% 10 2.6 2.5 2.4 2.6 0.0
7.|-- be2182.ccr41.ams03.atlas. 0.0% 10 12.1 12.1 12.0 13.0 0.0
8.|-- be2813.ccr41.fra03.atlas. 0.0% 10 18.6 19.0 18.5 20.3 0.0
9.|-- be2846.rcr22.fra06.atlas. 0.0% 10 19.2 19.3 18.8 20.6 0.0
10.|-- first-colo.demarc.cogentc 0.0% 10 18.3 18.3 18.2 18.8 0.0
11.|-- cr03.fra1.de.first-colo.n 0.0% 10 24.7 26.2 19.0 39.5 7.5
12.|-- de.cdn.proxmox.com 0.0% 10 167.4 104.1 83.4 200.8 42.9