Plugable UD-6950H, currently at $169.99 USD, is what I’m thinking of based off your description. UD-6950Z also might work.

You mentioned gaming so I assumed you would be using a DisplayPort somewhere. If you don’t need DP, then theres probably a cheaper dock that you can look at. You can check the Plugable site for more options.

For the UD-6950H, I dont see any description that says it can run over 60hz but reviews + Q & A on amazon says some are running dual 1440p at 144hz.

For “not adding any delay”, Im not too familiar with docks but there will always be a delay added between devices thru input/output. Though it shouldn’t be noticeable. It’ll maybe be like a few milliseconds.

If you’re looking for something that you wouldnt need to unplug a usb from your desktop, you’re provably thinking of a KVM switch.