Hi. Are you sure that it's a memory related issues? Have you tried to use swap? I have same looking freezes on Linux >= 4.10

bugs.freedesktop.org/show_bug.cgi

What version of kernel do you have?

Have you tried to ping your laptop when it freezes?

@Yury

I'm not sure that this is memory issue :(

1) I don't use swap

2)kernel version:  $ uname -r

4.11.6-3-ARCH

3) ping. I think that it will be possible, because even music continue playing(but with interruptions) when all windows and apps in freeze.

Monitor screenshot: drive.google.com/open

In this status - no sound , cursor can move but with delay in 30 seconds and veeeery slowly, clicks not fired.

That's the freezing for me :(

Any arch linux  users ?