Question Is it worth me upgrading just the GPU ?

[chris18]

I have an ASUTEK PRIME H310_M - R.2.0 motherboard with a XFX Radeon RX 570 XXX 8GB GPU and an
Antec NeoECO Modular 650W Semi-Modular PSU.

My main requirement is a good display when using X-PLANE 12 or MSFS 2020 flight simulators. I am not in the market for a full PC upgrade at this time.

I am wondering if I could improve my display by upgrading the RX 570 and if so what replacement should I consider. and what benefit I should expect.

Thanks