1.20.1 V. 4.60
When placing the volcanic source link, the server processor immediately spikes to 100% usage and begins overheating. This does not occur during single player. This happens when the block has simply been placed and no items are being consumed by it.
iot lives 1.20.1.zip
This is all the mods we have with it.

Please run a profile using the Spark mod and attach the results.