The quality is better, no doubt, but this method (from the paper) takes on the order of 10-45s depending on input from their table. Which is much better than 10 minutes etc.

That being said, afaict OP's method is 1000x faster, at 33ms.

Note that the method you linked is "Splatting in Seconds" where as real-time requires splatting in tens of milliseconds.

I'm also following this work https://guanjunwu.github.io/4dgs/ which produces temporal Gaussian splats but takes at least half an hour to learn the scene.