very slow web access
I have very slow access to web pages on my Macbook Pro (Retina, Late 2013) running OS X 10.10.4.
Occassionally web pages never finish loading.
The problem is independent of the browser (tested on firefox, safari, chrome and oracle) and does not depend on the internet connection (wifi and ethernet;
tried different connections). Another Macbook Pro (Retinal, Late 2013) running essentially the same version of OS X (10.10.3) does not have this problem when connected to the same wifi.
After a complete new installation of the system about 2 weeks ago the problem was gone.
Now it starts to appear again, though to a lesser extend so far.
Any help is highly appreciated.
Best
Carsten.
MacBook Pro (Retina, 15-inch, Late 2013), OS X Yosemite (10.10.4)