There is one more observation.
This time, I have tested 2 DisplayLink + 1 native display
Looks like this freeze is fatal on high CPU loads. On low CPU load, monitors still freezes, sometimes, then gets black, for a second and then works again.
Moreover cursor and overall monitor response on high CPU load, is low - displays works with delay, but on low CPU load - same response as on native display.
By high CPU load I mean ~90% of all cores average load, by low load ~30%.
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