Hi, I've started a server today in Aternos, with minecraft 1.14.1 vanilla, no plugins, no mods, no nothing. And just 1 player.
It was unplayable, 1 to 5 seconds of lag peaks when harvesting, sleeping or opening chests.
I've created a server in my pc to check the world and played it offline, single player and performance is great, so it must be a connection issue.
I'm playing from Spain maybe the server is too far away or my server was defective.
Thanks for reading guys =)
EDIT1: I've managed to try the same world in a different server made by a friend and lag was ok, not great but playable (he doesn't have a high end pc). So the problem is server side here. I would love to play it with aternos =)