Is the QM7 good enough with subtitle glow/blooming? Or should I look at the QM8 or QM7K?

My current TV is a Vizio Quantum P Series (2019). It's starting to have problems and it's just outdated.

I'm eyeing the TCL QM7, QM8, and QM7K as potential upgrades. But I'm mainly leaning QM7 if I'm being honest.

My main issue with my current TV is subtitle blooming. It has 240 dimming zones and when I turn active array to "low" it's still pretty rough. When subtitles pop up in dark scenes there's a noticeable discoloration, a blue-ish glow, that's distracting. But even in mid to bright scenes it can affect the color. I've tried turning my subtitle brightness to 50% on my Apple TV and it only mildly helps.

I know the QM7 has 1248 dimming zones and the QM8 has 2880. The QM7K has 2500 and some new "Halo Control System".

Does anyone know what subtitle glow I'm talking about and can speak to how these models handle it? We watch everything with subtitles.