I have only tried the one offered by YouTube, and not recently. I don't know if they have improved the algorithm in this respect, but for what I've seen in the

I have only tried the one offered by YouTube, and not recently. I don't know if they have improved the algorithm in this respect, but for what I've seen in the past, the filter often creates a very eerie wobbly effect on the video, an effect that makes it look fake, like being underwater or drunk. It is slightly visible in the demo video if you observe the borders. This strange effect is totally absent on the link I posted, which I believe it's on a different level of quality. But I imagine it's computationally very expensive and can't be offered to millions of users for free.