Is the 42-inch S90H good for gaming?

Yes. It has four HDMI ports with gaming features such as high refresh rate support and low input lag, and the 42-inch size works well on a desk. Check the exact refresh rate and VRR support for this model before buying.

Does it support Dolby Vision?

No. Samsung TVs use HDR10+ instead of Dolby Vision, so Dolby Vision content plays in standard HDR. HDR10 and HDR10+ content works as expected.

Is 42 inches too small for a living room?

It suits small rooms, bedrooms and desks, where viewing distance is short. In a large room with seating several feet back, a bigger screen gives a more immersive picture.

Do I need a soundbar?

Most owners of slim OLEDs add one. The built-in speakers handle everyday TV, but a soundbar or speakers improve dialogue and bass for movies.

Can I use it as a computer monitor?

Yes. The 42-inch 4K panel works well as a large monitor, and OLED's contrast suits dark interfaces. Keep static elements like taskbars moving to reduce burn-in risk.