I am having trouble downloading the OS X El Capitan 10.11.5 Update. Both direct downloads and App Store downloads end up being crazy slow (1kb/sec). Other App Store downloads or the direct iTunes 12.4 download are fast at ~2mb/sec.
I tried flushing the DNS Cache, changing the DNS from Google to ISP, and restarted all systems (Router, Modem, MacBook).
I enabled App Store Debug mode and deleted the App Store Temp Downloads folder but no luck. The download always continues at around 25 MB from the App Store.
I tried direct downloads with Chrome and Safari, but that did not work either. Is there a third party host for the combo update I could try?