Server Keeps Timing Out

Hello, and thank you for taking your time to help me out.

I'm experiencing constant time outs on my server with my one other friend. Our server is modded and stays open for about a minute or two, but lags horribly eventually kicks us out altogether.

I went through the logs and believe I found the mod that is causing the issue within the logs, (Open Terrain Generator) and we could just be overloading the server with the amount of mods we have, but I'm not expert when it comes to JAVA and wanted to see if there's anything we can do to fix our issue that I may be missing.

Logs: https://mclo.gs/SZ8sTSb

Thank you so much in advance!

Quote from Roman

If you already have an idea what the cause could be, why don't you just try it out?

Create a backup, do what you think and test and if anything goes wrong you can always restore the backup

I guess I should've been more clear with my throught process and my findings. Like I said, I'm not familiar with java code or anything, so I wasn't even sure if my hypothesis was even correct. From what I saw in the logs, it looks like it's trying to load more chunks than the server can handle and wasn't sure if someone could tell me if that would even be my issue based on the logs, or if there's an entire different issue. But you're right, I can just give it a test myself this evening if there's no other findings someone can tell me.