Very good advice, however (you knew it was coming, right?).... I think you overlook DLSS 3.
A friend asked me to build him a new machine for MSFS, and I took some time to experiment with that technology for the first time. And it is, as so many people already said, a total game changer for MSFS and X-Plane. Switch off DLSS 3, and we got 44 fps in one of my standard test locations; switch it on, and we got 83 fps. On a very solid 4k monitor, I was unable to see any difference unless I was extremely close to the screen. This was on a 4070 card.
I have an AMD card, so I know the AMD equivalent technology, FSR, but in my experience, it does not bring the same increase in framerates and lowers the virtual cockpit's sharpness and crispiness. Of course, drivers determine this to a great degree, but I have not seen a major improvement in the last months. So I think I will switch from my work machines back to Nvidia at this moment.