I originally noticed this in the Sevtech Ages modpack (As of update 3.0.8 it uses Astral Sorcery 1.8.10) where my base would get up to 100+ chunk updates causing my memory to be eaten up quite quickly. After removing most machines, I found out that the Ritual Pedestals (even when not active) can cause plenty chunk updates. One pedestal causing 20, a second causing 50, and a third bumping it up to 90-100 (For note, the pedestals weren't too far away from one another ~15 block distance max). I made a modpack with only Astral Sorcery 1.9.0 (and baubles as it was installed along side it). Going into a fresh save (waiting for the world to load around me of course) caused the same effect to happen.

I am aware that the Ritual Pedestal works in a large AOE effect but I don't know if all the chunk updates are intended or not.

Can you run some JVM profiling on it and upload the results for additional review?

Were these empty ritual pedestals, or did they have an attuned crystal inside them?

I'm not familiar with JVM profiling so some instructions would be nice. I tested with empty ritual pedestals, empty ritual pedestals on the marble structure under it, and active ritual pedestals. The chunk updates were consistent throughout them all.

Would recommend using visualvm for it, there's several good tutorials with video out there, but also the docs for it: https://docs.oracle.com/javase/8/docs/technotes/guides/visualvm/profiler.html

I've been able to begin profiling the client but the game crashes at about 50%. Do you know anything that could be causing it?

Wait to start the profiling until it's running. Likely a resource availability issue.

I started profiling when I was in the world. Should I start before I enter the save?

Edit: Tried it but the game immediately crashed, didn't even have the not responding popup.

Hmm, no once you're in the world should be enough. I'll see if I can replicate on my end.

Not sure what's happening for you, i can't see this happening both in dev, in dev with dedicated server, in a forge environment out of dev with just AS and forge. https://i.imgur.com/6UigWLb.png

This is what happens on my end. The world is completely empty and the only mods are Astral Sorcery
(1.9.0) and Baubles. https://i.imgur.com/KW372RK.gifv

So I tested this and also got the chunk update spam but I noticed Hellfire's screenshot was an older Forge version so tested with a bunch of different forge versions and lo and behold it looks to be something caused by a forge/Astral interaction.

Narrowed it down to being caused by Forge 2684-2686 (bugged commit in the same versions that insta crashes so can't narrow it down further... ) Hopefully this helps track down the cause and get it fixed.

Yes it seems to be something happening on a newer forge version. Trying to find out where/why it happens.

Actual critical information: Does this only happen in Singleplayer by any chance?

Using forge 2708 and astral sorcery 1.9.1 the chunk updates only went up to ~20 in a multiplayer world.

Yeah confirmed affects servers too, tested on an Exoria server which was running Astral 1.8.10 and forge 2705

I asked if this affects multiplayer the same way - so also spikes up to 150 instead of 20. 20 confirms my suspicion.

Will be adressed in 1.9.2, however this change might expose more desync as i can remember the weaker version i'm using now has resulted into something not getting synchronized in the past.... Oh, well.. the ritual pedestal might need a rewrite at some point...