@newellj definitely line them up and compare. You might be surprised at the differences. This is something I noticed before among my Samsung OLED Galaxy phones, that there is a lot of variance in brightness and tint and color shifting and other points of difference. Because of these variances, it may be possible for people to find an X that doesn’t irritate their vision. I don’t know. I did notice that when I bump my display down from 50% brightness I can detect the flicker. I can’t precisely see it, as I am not sure that’s even biologically possible. But I can detect it, meaning the text appears to be twitching a bit. It’s enough that it challenges my ability to focus on the text. It gives my eyeballs quite an odd workout and when I look up my own eyes feel a bit twitchy. Urgh, it’s such a challenge describing precisely what I’m feeling and perceiving. This is on my own display. I’d need more time to test things out on my husband’s display and that’s a bit tricky to manage right now because we both have Christmas stuff on our phones, shipping notifications and such we don’t want each other to see.