Thank you for the quick answer.
Sorry, I used a wrong word, the term "crash" is inappropriate for this case.
I should use "freeze" instead.
It's not a typical crash with bug reports, etc., the problem is that my computer doesn't respond to the right click command and after that, it does not respond to any input at all, so then I have to call task manager and quit Feflow.
The hardware acceleration trick is not working.
As soon as possible I'll try to update my graphic card driver.
Thank you again