Massive performance decrease on Raspi 3+

I notice a massive performance decrease on Raspi Model 3+ when enabling service k3s.
This means CPU utilization goes up to +100% and any keystroke takes minutes to come back.

This Raspi is running OSMC installation and I put k3s on top of this.
I modified /boot/cmdline.txt and put added this to the end of the line:
cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory

There’s no issue runing OSMC on Raspi 3+ only.

Can you please advise how to manage the resource utilization of k3s?