Anti-aliasing problem

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I know that problem. Anti-aliasing is not working nicely for models with small rounded corners (depending on the lighting). The only way i know to solve this is super sampling (render with a higher resolution and then down sample the image).
In this playground i added some post processes which realize 4x super sampling:
The only problem is that this may kill the perfomance on slow devices.

The other option would be that you render multiple frames of your scene with slightly modified camera position (jittering) and combine the images. This only works if your scene is static and the camera is not moving.
This is the solution i used in our product:
Here is also a ThreeJs example:

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