A:AnswerThis monitor only has a 60hz refresh rate and with the 3080, it will push some games above that so just a heads up. I would not worry about G-Sync on a 60hz monitor with the 3080. If you have a bigger budget, I would look into a 4K 120hz or 4K 144hz monitor personally, and it will have less input lag.
A:AnswerFor a budget monitor that can do 4K hdr (60hz), it’s not bad. Although hdr isn’t as good as I would want for it, it works. And yes, I use my ps5 with it.
It will do for now until more monitors around this size range that support hdmi 2.1 come out in 2021.
A:AnswerProbably. But it might not utilize the e arc passthriugh that most sound bars have built into their hdmi ports. You may have to just use audio out via aux.