3840x2160 120 Hz KVM

Can someone recommend a KVM that works? I've been looking for a couple of years now.

Requirements:

* 2-port, 1-monitor, DisplayPort 1.4 KVM

* Wired push button switch (and cable can be extended if needed)

* Runs at 3840x2160 @ 120 Hz (or 60 Hz), ideally 144 Hz

* Works with docking station (HP USB-C Dock G5 for business)

* Works with Classic 101 Black Buckling Spring USB keyboard

* Works with Logitech TrackMan Marble Trackball

* Works with HP laptop and desktop (NVIDIA T1000 GPU)

Anti-requirements:

* Does not intercept keystrokes (or can be disabled)

* Does not intercept mouse scrolling (or can be disabled)

* Does not randomly repeat keys

* Does not block certain keystrokes (e.g., ctrl+shift+t)

* Does not let Windows laptop go to sleep

* Does not take more than 3 seconds to switch between computers

* Does not randomly blank the screen

* Does not lock up the keyboard after switching

Here's the setup showing both computers and the push button switch:

* https://i.ibb.co/5nrDk21/kvm-setup.jpg

* https://i.ibb.co/hFsjT3S/kvm-switch.jpg

I have tried:

* IOGEAR GCS62DP (almost perfect; only 60 Hz; kills keyboard after ~60 swaps; RMA'd)

* DiamondTiger KVM Switch EDID 8K@60Hz, 4K@144Hz, DP 1.4 (repeats keys, blanks screen, has screen tearing, and many other issues)

* CanadaComputers iCAN HDMI USB KVM Switch 2x1 with Switch Extension 4K 60Hz (completely blocks certain keystrokes)

Wendell's Level1Techs Store offers a highly recommended KVM, yet lacks a wired push button.

What KVM switches "just work", in your experience, and have a wired push button for switching?

If I need to shunt a DisplayPort EDID feeder to prevent Windows from sleeping, that's acceptable, and a recommendation would be most welcome.