Thanks for the info. Since your resource usage is within normal ranges, it might be a specific mod causing the issue, especially since it happens both modded and unmodded. Here are a few more things to consider:
- Update Mods and Forge: Ensure all mods and Forge are up to date.
- Check Mod Compatibility: Some mods might not play well together. Try running the server with a minimal set of mods and gradually add them back.
- Test Without Mods: Although you mentioned it happens unmodded as well, make sure to test with a clean installation to rule out any lingering issues from previous mods.
Lastly, let’s run ampinstmgr dumpfirewall
to check AMP’s view of the firewall situation:
ampinstmgr dumpfirewall
Share the output from this command to see if there are any unexpected firewall rules.