There's no resolution yet. The crackling is most likely caused by wireless interference, and this is very YMMV. I have a smart home so I get a lot of crackling and dropouts as well (which I don't experience with other 2.4ghz wireless headsets such as Pulse 3D and Arctis 7p). However, Audeze has assured me that their engineers are looking into this issue as we speak in order to determine if there is a better way of improving wireless stability without sacrificing too much latency.
You can try a couple things to help, such as using USB extension cables or using the front vs rear USB ports. I also tried restarting my mesh wifi network after connecting the Penrose in hopes that it would automatically select a different wifi channel from the Penrose. More tips here:
https://audeze.zendesk.com/hc/en-us/articles/360050582971-Troubleshooting-wireless-stability-issues
Personally, I've tried USB hub, 2.0 and 3.0 USB extenders, but have actually settled with just plugging it into the front USB port. I haven't had as many issues lately, though I still do get the occasional crackle. Wireless range is still poor compared to competitors, but I have faith in the Audeze engineers looking into this; their turnaround on the first firmware update to address the "woosh" noise and mic quality was incredibly fast.