good I installed the client yesterday and I have constant fps drops, I have tried without addons, I have removed the read-only from the folder, I have tried it in different resolutions and graphic configurations and I have not been able to solve it, I have a 3080ti, hard disck m2, and amd ryzen 3600x, 16mb ddr4.
Reduce view distance, even small change can improve FPS. Also there's no real need to see Argent Tournament grounds all the way from Dalaran. Low(er) FPS is to be expected in populated areas regardless of hardware.