How often is that used? Is there a way to check?

With the amount of bullshit animations all OSes come with these days, enabled by default, and most applications being webapp with their own secondary layer of animations, and with the typical developer's near-zero familiarity with how floating point numbers behave, I imagine there's nearly always some animation somewhere, almost but not quite eased to a stop, that's making subtle color changes across some chunk of the screen - not enough to notice, enough to change some pixel values several times per second.

I wonder what existing mitigations are at play to prevent redisplay churn? It probably wouldn't matter on Windows today, but will matter with those low-refresh-rate screens.