I runned demo with portal on my new PC (on which I've finished alot of games, such as battlefield 3 on high settings) and I got about 30 fps and jerking movement, but portal itself is awesome. Long time ago, I had an idea of how to do the same, but without shaders, maybe I'll give it a try. Anyway, is that portal shader so 'havy'?

Looking for free stuff?? Take a look here: http://badcom.at.ua
Support me on: https://boosty.to/3rung