Paul,
I experienced this same audio drop using JTDX, WSJT-X, and MSHV. I wasn't sure what to do so i played with the various audio drivers. At times it would just randomly drop the audio for a brief moment but other times, it would start to TX and like 5 seconds into the TX it would just drop the audio, the power would go to zero. I started by checking my CPU utilization and found that it was high at times. My machine was a Dell, with an i7-8700 CPU, with 64Gb of RAM and 1TB NVMe drive running Windoze 11. After not finding a solution, i decided to upgrade my computer to a Dell with I9-13900F CPU, 64Gb RAM, and 1TB NVMe drive still using Windoze 11 and my issue went away.
I will say that I feel that my excessive CPU utilization was coming from my logging software Log4OM as it was SLOW!!!! If i turned off Log4OM and ran any of the mentioned 3 FT8 software, the audio drops were much less, but still noticeable. Now, with my new machine, i've only seen it happen 1 time. I'd like to think the they super FAST CPU has helped, but only time will tell.
73,
O.C. - NG7E
dxobsessed.org