Comment # 8 on bug 1117833 from Victor Zhestkov

It seems the issue is hardware related somehow. I have two laptops with the
same Tumbleweed installed. ThinkPad T460 has this issue, while T470p not.
T460 with CPU: Intel i5-6300U and Intel HD Graphics 520
T470p: Intel i5-7440HQ and Intel HD Graphics 630

The behavior under wayland and XOrg is quite different.
wayland session duplicates keypresses, while XOrg just has micro freezes and
character appear with delay, but always only one.
Other input devices also have such freezes: mouse and touchpad stop moving for
a second.

The cpu utilization on both laptops are fine and the issue seems not depending
on the CPU load.

Any ideas how to find the root cause of the issue?