i have developed this weird issue and i don't know what to make of it. i have tried two different wireless keyboards on separate dongle in different ports. one no-name and one logitech k3xx, 350 or 320 something like that. when i restart Windows 10, it will start out okay, but it's like it build up a queue of key presses, because it will start to lag worse and worse until i get a few second delay and only every few few keystrokes makes it through. The odd thing is, no other input devices lag. my usb wired mouse and logitech G13 gaming pad work fine. there is no network lag. only wireless keyboards. With ordinary use, it may take quite a while to manifest. it is very quickly aparent, though, with gaming. it looks like long keystrokes act like repetitive keymashing and speed up the process. A game like Overwatch can become unplayable in maybe one to two minutes of gameplay. Exiting the program also does not help. Only restarting. The only similar issue i could find someone claimed they could fix by turning off the Game DVR, but this did not work for me.
I found an old wired keyboard at work that i am going to take home and test. I will post the results, and i will post specs then also.