I have a Yamaha RX-V673 and have been experiencing a loud cracking or popping noise through speakers at random intervals when playing some content with this HD sound format. I've spoken with Yamaha a few months ago who gave me v1.8 firmware ahead of general release which may have reduced the issue somewhat but has clearly not resolved it. Has anyone else had issues with this and successfully resolved them? For background I am using a HTPC to watch uncompressed MKV files with this as the only sound track. PC is connected via HDMI. Thanks in advance!