BillPhillips wrote:With the RX 580, so far I can mix with the sample buffer at 64 samples with very infrequent popping and crackling usually after starting playback or looping or making a change. So the increased GPU processing power appears to make a big difference probably because iZotope uses OpenGL.
It's good to hear you've seen the improvement and thank you for the feedback, I'm never quite sure when dealing with Open GL spottiness as you never quite expect it with audio systems. As you've also experienced companies rarely offer it up as a reason unless you're rather specific in your fault reports, so there can be much head scratching until the confirmation rolls in! Happy to note this one for future troubleshooting through.
BillPhillips wrote:There are however some new issues:
(1) The card fills up two slots and is touching the cards on either side.
I would have said that you could have gotten away with a less powerful card than that, but given current range pricing now I doubt going lower would have saved you all that much in comparison to the performance lost. Even the 550 range appear to be dual slot these days, so options there would have been limited to get around this issue.
So, when you say it touches, are you talking about the cooler against the rear of the card next to it? Are you completely out of slots otherwise? Could the card next to it be shuffled anywhere else?
The fact you're still stuttering at this point would seem to indicate that you may have had multiple issues going in. Probably worth rerunning Latency monitor and seeing if anything owns up to those remaining crackles.