Thoughts regarding the rolling cache.
I you are mostly flying A to B it helps little however if like me you are gliding or flying within scenery it helps a lot against popping in and scenery freezes, particularly photogrammetry.
It need not be massive however it does need to be on a fast drive away from your content files and it does needs to be maintained as changes to system or sim can leave it in a confused state.
For glider and heli flyers that have 32GB or more of ram I suggest that an 8GB cache on a ram drive is perfect and is maintainance free because it will automatically clean and refresh itself at every system start. For some reason any other number needs user interaction e.g. if you only have 16GB ram a 4GB cache works well but after any PC restart it needs the size to be re inputted which is obviously not ideal. Using fast ram scenery freezes and microstutters should be history and if my set up is anything to go by there are also possible fps benefits when flying fast and/or low.
This is from the SU11 beta 2880 x1620 + DLSS (quality) on my mid/high range PC, everything ultra
HT 1080p - YouTube
And this for 4k, DLSS (quality), DX12 ultra preset
NYC DX12 - YouTube
R73800X, rtx3060(12GB), 32GB CL14@3333MHz