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
• Has a wired push button switch (and cable can be extended if needed)
• Runs at 3840x2160 @ 120 Hz (or 60 Hz)
• Works with HP 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 custom desktop build (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 require manually re-waking Windows laptop by pushing power button
• Does not require switching back-and-forth to re-establish connectivity to both computers
• Does not take more than 3 seconds to switch between computers
• Does not randomly blank the screen for 1 second
• Does not require unplugging and re-plugging the USB keyboard

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; 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 toggle button.

What other KVM switches are available that "just work" and have a wired push button for switching?

The next KVM I'm thinking about trying:

• GiantMatrix with LINDY EDID Emulator

ATEN also has a switch, which is on par with the IOGEAR (4K @ 60 Hz, no EDID):

• 2-Port USB DisplayPort/Audio KVM Switch