I'm having a massive headache with QoS on this router, it was working fine until a few months ago, now it completely ignores whatever percentage I put under the QoS Section, I have VoIP set to 85% and everything else to 5% yet upon visiting http://www.speedtest.bbmax.co.uk/ and running the speed test, the online statistics under the QoS section show the Others section completely overwhelming the VoIP, the phone completely breaks up until the speed test is complete.

What is happening and why is the router not behaving as it should?!