Note
The sleep 10 is in seconds. You may need to increase this to give time for WaveLink to start. Then autostart the .bat file.
Starting WaveLink before the Stream Deck Software…
If WaveLink or Voicemeeter is not connecting to your Stream Deck on startup, you will need to change the start order.
You can accomplish this by turning off autostart in both applications. The create a .bat file with the contents as follows:
Start "" "c:\Program Files\Elgato\WaveLink\WaveLink.exe"
powershell -nop -c "& {sleep 10}"
Start "" "c:\Program Files\Elgato\StreamDeck\StreamDeck.exe"
For Voicemeeter, replace the WaveLink path with the path to Voicemeeter.exe.