I'm pleased to report there is now a fix for audio glitching when using a Carrera040 accelerator card (original or clone) in an SE/30, thanks to a revised Control Panel from @Bolle and GeekDot. I have uploaded it to the Macintosh Garden here...
I personally do not own that card, but I do hope this helps those of you who do.
MicroMac Carrera040 Accelerator Control Panel (SE/30 Audio Fix) - Macintosh Garden
DOWNLOAD is a control panel for use with the Carrera040 accelerator. Fixed by Bolle and GeekDot to resolve audio glitching on the Macintosh SE/30. Product info page (defunct): https://www.micromac.com/products/carrera040.html Bolle makes a clone of the Carrera040. Please check the 68kMLA forum...
macintoshgarden.org
I personally do not own that card, but I do hope this helps those of you who do.