Been playing with modems tonight trying an unlocked HG612 with the Help of Kitz pages on the subject. But have restored my trusty TP-Link TD-W9970. But after playing I find that JD Auto Speed tester upload test has dropped from 17mbps to 5mbps. Testing using the speedtests on TBB and Speedtest.net shows upload is at a normal rate of about 16.9mbps. Any ideas why JDs Auto tester which usually shows best speeds would suddenly show low?