Hey Wulf,
Ok so update as of this morning.
Uninstalled Kaspersky. Hasn't changed anything.
All drivers are up to date (was done a couple of weeks ago). No change.
Trying to download latest software from Logitech for G5 Mouse and G510 keyboard but having issues on their download page. Once I can figure this out, I will update again.
Cheers again for your help with this.