System Hang Prevention is killing my encoding!

He needs the zram to increase the processing resolution, How does ZRAM impact heavy load?

@Hanuman I would bet on those spikes too.
Perhaps rather than disabling it altogether try see if you can configure it for your purpose,

Customizing corrective actions: if the name or control group of the victim matches a certain regex pattern, you can run any command instead of sending the SIGTERM signal

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