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MSTP spikes insanely when player enters new/already generated chunks

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Blanc de Hotot posted this in #questions
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Blanc de HototOP
Hi, the issue I’m encountering is that whenever players enter newly generated or already loaded chunks, the MSPT spikes, causing stuttering, although the TPS remains normal. The server is only smooth and lag-free when players avoid entering new chunks. I’ve tried installing mods like someaddon’s chunk sending, better chunk loading, and limited chunks, and while the situation has improved slightly, the issue persists.

Here's the logs from Spark: https://spark.lucko.me/UbUqPzsTeo

It's a Fabric 1.20.1 server, with 65 mods loaded, hosted on a rented server with the following specs:

CPU: Platinum 8275cl (but only 2 cores allocated by the hosting provider)
RAM: 8GB
NVME SSD

This is my first time setting up a server, so I would really appreciate any help. Thanks for your patient.
I see you are using no JVM flags. That is likely at least a large part of the issue. Please use https://flags.sh to apply appropriate JVM flags, then if the issue persists, rerun your Spark report while the issue is happening and post it here.
@PM_ME_YOUR_REPO I see you are using no JVM flags. That is likely at least a large part of the issue. Please use https://flags.sh to apply appropriate JVM flags, then if the issue persists, rerun your Spark report while the issue is happening and post it here.
Blanc de HototOP
Thanks for your advice! I've applied the new JVM flags and it works pretty well, although the spike still persists, but it's more bearable compare to what it was before.
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