I gave a try to Insane difficulty and it went pretty well until I got "lucky" with Aard. It stunned a lot. Problem is, it seems like enemies can still hit me while I'm killing off a stunned enemy like, let's say, they were starting to attack me when the animation started, or an arrow was already in its flight. So when the animation ended, I instantly died.
Does anyone know a fix/workaround (beside not stunning)? This is a real killer in the Arena or on Insane difficulty.

Dragonbird, one of the awesome moderators at the official Witcher forum, has a mod to disable the finishers.

Linkadoodle.

I haven't used it, myself, but I've used some other stuff of hers and it's always worked well.

Thanks, it looks good, but isn't there a mod that freezes the combat around you for the time of the animation? They look way too good to let them go because of this damn bug.

Not that I've ever heard of. I think the number of things modders can do at the moment is severely limited because they haven't released an SDK for the game.