2c
RainbowFan
2c3963fd38a12b1fbca76a474640f16c5ff6603e24e064618606a9dba9955c45
If everyone would be running a hidden service on device for there relay, i2p would be superior to tor in this use case.
Yes it take some time to build a circuit but hidden services will always be slower even afterwards since there are not only your hops but also the hidden services ones.
I am using Amethyst over tor and do experience some slowdown. Scrolling is smothe but, I get stutters, especially when I encounter post with images or videos. Also it may be a good idea to increase the local cash size when using tor to save traffic. Another neat feature would be to have some user configurable size threshold over which posts/media is only loaded on click.