I'm very excited about the coming launch and have been playing the beta from the start. But each time I try to play, the performance and stability issues make the process too frustrating. So I stop before I really get to test the balance and game-play aspects you are wanting us to look at. Then the next Beta comes out and the hope is that the issues have been fixed. And so on.
I don't know if many other testers feel the same but the stability issues seem to have been around for ages.
1. Intermittent blurry 3d.
2. Problematic fog in 3d.
3. Intermittent darkness in 3d.
4. System crashes (where you need to completely reset the computer).
5. Alt-tab (so we can write notes etc but continue playing).
6. Load game from menu without needing to restart (and now loading a game causes a system crash).
I would love to be able to give meaningful feedback but the above are real killers.