After 10 January (meltdown patches) I've started sometimes experience 1 second stutter. My audio stutter and maybe video as well but it is hard to notice, mouse cursor lagging as if experiencing high load on HDD and during this 1 second I have high load on CPU.
I managed to make a screenshot of KSysGuard during(or aftermath of) that 1 second:
https://i.imgur.com/k3u8PNi.png
If I turn off the Wi-Fi or connect to the Wi-Fi network problem disappears.
Just in case, here is the wireless info - https://paste.ubuntu.com/26484280/
I've tried Linux kernel 4.10.0-43 and there was no problem. Any kernel from 4.13.0-26 and up to the 4.16.4 have this problem because I've tested many kernels on different distributions.
Distro: Xubuntu 16.04.3
Kernel: 4.13.0-32
This is a bug in the kernel but I don't know how to specifically report it.
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