Registered here for just this case, because i found out what was not working for me.
I am using a wireless Logitech mouse which uses 2.4Ghz connection.
I have Corsair Virtuoso Wireless SE which also uses 2.4Ghz connection.
When you put those two things together it causes problems in the wireless transmission.
Quick and easy solution for this was to get a usb extension cable and change the usb dongle of Virtuosos to left side/far away from the mouses wireless transmissor, that they do not harass with 2.4Ghz connection between them.
Believe me, i banged my head in the keyboard for 24 hours straight and continued banging it on the wall for same amount of time after realizing it was this small thing that caused the problem.
Hope this helps, because for me it fixed the problem.