I have severely bad ping in the server at certain times, especially at night times (1000 utc onwards). This problem is a bit weird because some of the members of my server have the same issue but others don't. It is perfectly fine during the days, giving good ping, but at night it's just stuck on 2000ms During these times my internet is only slightly slower than usual (around 300ms). Other Minecraft servers are perfectly fine, so I think it's only Aternos that is having this problem. I've also tried logging into my friends' servers and I have the same problem there, I've lost hours of work in survival servers because of this problem, and I am now too afraid to log on at night. I've read and reread the help articles concerning lag several times, and I can't seem to find a solution. My location is set in East Asia. Thank you.
Edit: The tps of my server is fine, nearly always 20 TPS