I’ll add my 2 cents here - may or may not make a difference. I watched your video and noticed you had DLSS turned on and your MSFS full screen resolution was set very high - I suspect it matches the native resolution of your monitor?
If this is the case, I believe you’re not getting the performance benefits of DLSS. DLSS as I understand it upscales your resolution very efficiently, however, you have your MSFS resolution equal to the native resolution so no upscaling is happening. MSFS is rendering the screen to the full resolution of your monitor so essentially eliminating any performance help DLSS could provide.
What I recommend you try is set the MSFS full screen resolution to something less than your monitors native resolution and let DLSS do the upscaling. The result should be less GPU % usage such that now you can turn things like TLOD up a little higher.
Edit: I also recommend that you turn hyperthreading off in your bios if you have not done so already. Doing this with my 5900x helped reduce the micro stutters. Your processor test scores on the artificial stress tests will score a little lower in the multitasking areas but your single core tests will be a little better (and that helps MSFS).