To many little issues!

Is kind of weird. Maybe is my system or, I don’t know, but the graphics are not as sharp as they were. The scenery doesn’t look at all as it used to and the clouds are terrible. Then is the issue with the throttle settings. Now, I have issues with the reverse throttle when it was working perfectly fine before and I had profiles for every aircraft! Now is all messed up! It gets frustrating that after i upgraded my system the sim doesn’t seem to improve but rather getting worst. I’m about to upgrade my PC for the last time because as it is, every single game works like a charm with my current setup, except the sim! I keep getting issues that I thought would be gone. Yes, if I fly from a small or regional airport is fine, but as soon as I go to a bigger airport with traffic the FR drop dramatically.
I think my current system is pretty good: EVGA RTX 3090Ti, Intel i9-9900KF, DDR4-3200 (1600 MHz) RAM, Z390 Aorus Ultra CF motherboard. All this, in my opinion is perfect for the most demanding games out there now, but not for this sim, or any sim for that matter.
I’m giving it a last chance with my new upgrade: Gigabyte Z790 Aorus Elite AX DDR4, LGA1700 motherboard, Intel Core i9-13900KF (5.8GHz Turbo) 24-Core CPU, NZXT LGA1700 CPU Cooler Upgrade Kit, even though I already have liquid cooling on my current system, MSI GeForce RTX 4090, GDDR6X. I’m even upgrading my C drive to a larger capacity one. I also already have DDR4-3200 (1600 MHZ) Corsair 32 GB. So I really hope this is it.
I’m not going to mention my peripherals since I don’t believe it relates to the issues, but suffice to say I got what I need to fly anything.