Disable spectre/meltdown etc. mitigations

Yes

[ -d /etc/kernel/cmdline.d ] || \
    sudo mkdir -p /etc/kernel/cmdline.d && \
    echo "PARAMETERS" | sudo tee -a /etc/kernel/cmdline.d/SOMEFILE.conf && \
    sudo clr-boot-manager update"

It’s just one shell command.

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