Hello,
since today I have the same issue.
My Windows 10 language is english US, Speech language is English US, everything is English US.
After checking all the languages settings, I saw that in the Speech settings (not the advanced speec recognition settings), French is available in the list but NOT selected.
I do not have the ASUS tools that I already removed in the past as they were causing issues...
Thanks in advance for your help !
Moun.