stuttering with LE 11

  • Greetings,

    I know it is not supported in general but I'd be happy to hear some ideas on my issue.
    I'm running LE11 on kvm with the gpu (intel HD 630) as pass-through.

    LE 10.x worked without an issue, after the upgrade to 11, I get stuttering every few seconds.

    the entire system feels like that.
    is there any pkg update that might cause this?

    I did't tried factory reset thought.
    looking at top in the vm, I don't see the cpu above 50% usage and the ram is less that 10% usage.

    in the host, the process's usage is not demanding so looks like it is something in the os.
    one thing I found, I have a cdrom that I see under /dev but the entry in the side menu doesn't exists.

    ideas?

    Thanks.