Two stars instead of one because tech support was actually friendly and helpful.

Tech support was friendly, but the only solution they could offer was for me to turn down the refresh rate of my monitor.

Tech support keeps telling me to check the cables

Every chat with the tech support, they had no clue why this device isn't working

I then returned the unit to Amazon on the advice of the tech support person.

Big thumbs up to the StarTech tech support for patiently walking me through the setup steps and asking pertinent questions throughout

Eventually, I discovered through their tech support that this hub won't work with the 144Hz refresh rate I'm running at.

Tech support confirmed it

Did anyone succeed connecting 3 HDMI 1920x1080 to the usb c?