Windows 10 64bit, four cards - two RX 480 and two RX470. Latest Afterburner 4.2 and previous 4.1 don't work if there are more than 3 cards in your rig in compute mode. Haven't tried in graphics mode yet. What I mean by don't work is that you can't change any of the controls. Also it doesn't monitor the cards showing 0 for all the values. It also doesn't show the drivers version installed. If you have less than four cards then all the controls work and it shows all the values. As soon as you install the fourth card into your computer - MSI Afterburner is useless and the cards are loaded with default settings from their bios. If anyone has a fix for this - please, let me know.