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?
Maybe you mean screen tearing, bad deinterlacing, etc. caused by software running on a PC?
I get that CRTs aren't perfect, but I'm not sure how else to reproduce what you're calling "flicker".