Thanks for the replies. I use Australian
www.telstra.com and browser Internet Explorer.
The speed test was well above average during investigation
Rang their tech contact people and as expected got an SE Asia overseas call operator.
He led me through a series of acrobatic arse over head actions including the unplugging and re-plugging of modem and other various wall plugs. His recommendations worked perfectly and my problems with perceived slow internet connection vanished after about ten minutes . Pity about bashing my ancient knees while crawling under tables trying to locate wall plugs. Once again, thanks to all of you who were good enough to reply