CPU or GPU upgrade

New to TD, my current Mac is -

Mac Pro 7,1 (2020)
Cpu - 3.5GHz 8‑core Intel Xeon W processor, Turbo Boost up to 4.0GHz
Graphics card - Radeon pro 580X 8gb ram
System ram - 32gb

I’d like to know what would make more difference - upgrading the cpu or graphics card?
I’d like to make sure I have enough juice to run the program smoothly as I get more and more into using many operators.

I will be working a lot with audio, sops, tops. Mostly doing audio visual art.

Any help or advice would be great,