Hey Gary ,
ok I think I got it figured. Thanks to your remark about the voice I use, started trying stuff related to that.
Before in the Say Something With Text-To-Speech window the voice setting was always at "default" as the "Ivona 2 Amy" voice is the default I use on my PC which so far always worked ok.
If I now set it explicitly to "Ivona 2 Amy" everything works fine and VA doesn't hang anymore !
And VA seems to remember what I used last in Say Something I don't have to reset it every time , just when editing old entries.
So as far as I can see problem solved.
btw. the single TTS instance setting doesnt make a difference here.
As this all happend recently and VA doesnt seem to be the cause (tried other versions also) I suspect the recent Windows 10 update borked things up
Thanks for the quick help.
Regards