The hysteresis of the phosphor makes this a non-issue in reality. 60Hz looks great on a CRT when the input is a game console or VCR from the era.

Maybe you mean screen tearing, bad deinterlacing, etc. caused by software running on a PC?

You can increase the refresh rate until it goes away. I don't think anyone notices flicker at 80Hz or so.

The flicker is fine, especially with 240p and 480p.

You do want to simulate it, because it's the only way to preserve the original motion quality of games designed around a fixed 60 fps frame rate without changing the gameplay or adding latency.

My CRT did 1024x768@85 just fine.