Logitech Unifying Receiver Lag - Solved!

I'm a big fan of Logitech's Unifying Receiver technology - I have the Performance MX mouse and the K800 Illuminated keyboard, both of which are excellent. One problem, however, seemed to affect the mouse particularly: Intermittent lag. Every so often the mouse would stop responding, do something weird or behave in a temperamental and highly frustrating manner. Happily I have managed to find a solution to this and resolved all of my lag problems.