Hello, I have created an account because I'm not sure what else to do at this point. I've been using Aternos for a short amount of time (A few months, maybe) and I'm very aware of the duplicate threads of this issue, but nothing I attempt seems to work.
I recently moved a 1.13 server to the 1.14 pre-release 2, I backed up the 1.13 world and did everything necessary if I need to reload it. However, a lot has been done recently since the update and the lag isn't always bad. The log is always saying "[Server thread/WARN]: Can't keep up! Is the server overloaded? Running 25730ms or 514 ticks behind" (The latest warning); I'm not too sure what this could mean. I've tried toning down the entity count, kept my friends close to not load too many chunks at once, and killed every entity and re-spawned what was necessary. I am aware since it's very new that there isn't a good performance and may still be in rough shape. There are no mods/plugins and it's your basic Vanilla server.
How can I fix this, at least temporary, without ruining recent builds?
Thanks in advance.