Lemmy.world is having some serious issues lately. See https://lemmy-world.statuspage.io/
I'm seriously considering switching to a different instance.
It's unrelated to Photon.
I recently ran into an issue with my home network where I suspected that the current wifi router (3-point mesh) couldn't handle all the clients simultaneously. Not in a manner of throughput, but just with keeping all the devices online in the first place.
I have at minimum 30 clients online all the time, up to a max of 40 or something, depending on who's home or what is active. (Went a bit overboard with home automation and stuff.)
I was getting random disconnects or stalling wifi on some of the devices. The coverage was fine, so I figured it was just the number of wifi signals that was overwhelming the AP.
Point of the story: I was disappointed that absolutely no review/benchmark ever pays attention to this kind of upper limit that seems to exist in practice. It's all range and speed, but never about the maximum number of active clients.
I've replaced the mesh network and everything is fine now. But I had to trial and error that shit...