Replacing QN90F. Suggestions?

TLDR; My QN90F sucks for live TV and looks grainy. Need recommendations for a TV that is elite with motion handling and whatever causes graininess, and ideally can handle a bit of brightness. 75” or higher, would prefer to be within the general ballpark of the $1999 I paid, but willing to go a bit higher if necessary. Bonus if you can recommend a 75” bedroom tv in the $1000 range as well.

I just got a 75” Samsung QN90F and disappointed would be an understatement. I loved the picture in store, even more than any of the flagship TV’s (OLED or Mini-LED). And the matte screen looked great for glare/reflection handling.

Unfortunately, I just got it mounted 2 days ago and got my Apple TV all hooked up and it looks terrible. I looked up the recommended settings and made those changes, which helped a bit with some issues, but did not fix them all. The matte screen does its job amazingly, probably the only redeeming quality, but watching live TV was rough. It looks grainy at times, it’s jumpy/jittery/laggy during scenes, and at one point the sound and the mouth of the person talking were out of sync by like a quarter of a second. I feel confident that it’s not my internet because my Sony X90K looked fine.

Streaming looked a bit better using Hulu and Peacock, but my YouTube TV looks bad. I’m even watching golf right now and the scorebug looks grainy, it seems just a tiny bit unfocused, and a sky view of the course made the trees look like they had a black shadow and weren’t defined/clear.

To make matters worse, I have a 75” QN90D on the way for my bedroom. Before getting the QN90F up I figured it would be mostly as good and I got it for $1000 on sale. Had I realized the QN90F wasn’t good I probably wouldn’t have done that. Planning to cancel that order.

With that said, I need some new recommendations. Motion handling and whatever causes the graininess has apparently become very important to me and I don’t want to have to deal with it. I got the QN90F for $1999, so I’d prefer something in the same general price range, but willing to be flexible. It ideally needs to be handle some brightness. I have a window off of the left of my living room (with curtains that work pretty well) and the kitchen behind it where lights are sometimes on. And if anyone wants to throw in a bedroom suggestion as well that would be great.