Hi,
Ok so I have an spark adsl wired connection for my computer it also runs 1 wifi connection off the modem (my sisters laptop) everything use to be fine then out of the blue the wired connection would freeze and make trying to load anything incredibly hard (ping would go from base 38~ up to 250+) i worked out this was happening whenever she would go onto Youtube/video/high data site on her laptop. So i tested playing videos etc on other wifi devices such as iphones and tablets and they had no affect on the wired connection it was just the regular 38~ ping, I then tried running vids on the wired connection and doing speedtest/pingtest on her laptop but it was perfectly normal. It is solely just the laptop causing the issue for the wired internet. Its not the router i have tested 3 different ones, i've tried resetting,rebooting and clearing the cmd but was no help.
Any ideas?