I found that if CPU usage was very high approaching 100% that decoding 
failed.So I've started bumping up the priority on WSJT-X to ensure it doesn't 
get starved while reading audio.Sounds like you may be experiencing dropouts on 
transmitting.Windows can get very busy for a while after an upgrade.
Try making WSJT-X realtime or one notch lower than realtime.
de Mike W9MDB

 

    On Wednesday, May 23, 2018, 7:47:52 AM CDT, Dave Crockett 
<wb4...@bellsouth.net> wrote:  
 
 
My apologies in advance if this has been covered, but I didn’t find it in the 
archive…

  

After installing the Win 10 Pro April 2018 update on my Dell laptop on 5/18, 
all versions of WSJT-X I have (1.8 and 1.9 rc3&) became unusable.  Decoding 
became extremely infrequent and erratic, and transmissions developed a 
fractional second “hiccup” at approximately 5 second intervals (data and 
“tune”).  No amount of diddling with the software, the SignaLink modem or the 
PC configuration would resolve it.  Reverting to the previous build of Windows 
returned all versions to perfect functionality.

  

FWIW.

  

73,

Dave WB4DFW

  

Sent from Mail for Windows 10

  
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