Is the TCL R84 good for PS5 and Xbox Series X?

Yes. It takes 4K over HDMI at high refresh, so consoles run at their top 4K modes. Check that your console cable and port support the higher bandwidth.

Does it work as a USB-C monitor for a laptop?

Yes. USB-C carries video, so a compatible laptop connects with one cable. Confirm your laptop's USB-C port supports DisplayPort video before relying on it.

How does it compare with a plain 4K 144Hz monitor?

The QD-Mini LED backlight gives much deeper blacks and brighter HDR than edge-lit 4K panels. The trade-off is a thicker, heavier body and some blooming in dark scenes.

Is 32 inches too big for a desk?

At 32 inches, 4K text stays sharp at normal viewing distance. You need a desk deep enough to sit about an arm's length away, and a stand or arm rated for 30.5 lb.

Does it have a KVM switch for two computers?

No KVM switch is listed. If you share one keyboard and mouse between two machines, plan on a separate KVM or swapping cables.

Is the 1ms response time real?

The 1ms figure is the panel's rated response, measured in its fastest mode. Expect slightly slower real-world motion and some overshoot at the most aggressive setting.