In addition to what's already been mentioned .....
- Are you doing any massive downloading or file transfer in the background? This can cause issues if your internet is running at 100% for extended periods.
- Is something/somebody else leeching off your internet? This can cause symptoms of being sluggish or unresponsive.
- Are you using a proxy network? Any issues those networks might be having become your issues.
If it's a DNS problem try using OpenDNS and see if the symptoms change.
You can also try posting in Community Led Technical Support.
26-Jul-2017 15:34:18