PendjiI'm thinking they're focusing on the basics first, and then easing into it with config editing and what not. The stress test exists for no other reason than to test code and server capacity (I fucking hope).
Been waiting on a dx9 optimization for years now, and I know for a fact I played dx9 on the TF2 Beta when it launched with upwards of 400 constant fps on an outdated pc. Not even unusuals could pull 350 frames out.
They've been restricting configs, yes, but the thing is, I think they're testing out forcing certain values and they must have picked some really horrific ones for this test. It wasn't this bad last time and it's never been this bad for me before, and I have never run an FPS config. On an i5 2500k @ 5GHz and a 970, I shouldn't have 50fps, and I don't when I'm not on a matchmaking server. Even MvM is better.