It takes a lot to download the packages at 50K/s.
For example:
`Connecting to 128.1.164.196:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 23313457 (22M) [application/octet-stream]
Saving to: ‘icu4c-60_3-src.tgz’
0K .......... .......... .......... .......... .......... 0% 117K 3m14s
50K .......... .......... .......... .......... .......... 0% 87.5K 3m46s
100K .......... .......... .......... .......... .......... 0% 70.2K 4m18s
150K .......... .......... .......... .......... .......... 0% 55.7K 4m54s
200K .......... .......... .......... .......... .......... 1% 45.5K 5m34s
250K .......... .......... .......... .......... .......... 1% 24.3K 7m12s
300K .......... .......... .......... .......... .......... 1% 27.3K 8m6s
350K .......... .......... .......... .......... .......... 1% 25.6K 8m54s
400K .......... .......... .......... .......... .......... 1% 21.8K 9m47s
450K .......... .......... .......... .......... .......... 2% 30.5K 10m0s
500K .......... .......... .......... .......... .......... 2% 38.9K 9m56s
550K .......... .......... .......... .......... .......... 2% 42.0K 9m49s
600K .......... .......... .......... .......... .......... 2% 25.1K 10m11s
650K .......... .......... .......... .......... .......... 3% 23.8K 10m32s
700K .......... .......... .......... .......... .......... 3% 34.6K 10m31s
750K .......... .......... .......... .......... .......... 3% 19.6K 11m0s
800K .......... .......... .......... .......... .......... 3% 23.7K 11m14s
850K .......... .......... .......... .......... .......... 3% 22.3K 11m30s
900K .......... .......... .......... .......... .......... 4% 29.5K 11m31s
950K .......... .......... .......... .......... .......... 4% 17.8K 11m56s
1000K .......... .......... .......... .......... .......... 4% 13.9K 12m35s
1050K .......... .......... .......... .......... .......... 4% 22.3K 12m43s
1100K .......... .......... .......... .......... .......... 5% 22.7K 12m50s
1150K .......... .......... .......... .......... .......... 5% 19.9K 13m1s
1200K .......... .......... .......... .......... .......... 5% 27.2K 13m0s
1250K .......... .......... .......... .......... .......... 5% 21.7K 13m6s
1300K .......... .......... .......... .......... .......... 5% 20.0K 13m15s
1350K .......... .......... .......... .......... .......... 6% 29.6K 13m10s
1400K .......... .......... .......... .......... .......... 6% 22.2K 13m14s
1450K .......... .......... .......... .......... .......... 6% 27.0K 13m12s
1500K .......... .......... .......... .......... .......... 6% 33.2K 13m6s`
I've seen this in the last couple of days on several packages.