Which version(s) have you experienced? (Any that track eyes?) I've only used Quest 1, with _fixed_ foveated, and while it's noticeable, it's good enough that I

Which version(s) have you experienced? (Any that track eyes?) I've only used Quest 1, with _fixed_ foveated, and while it's noticeable, it's good enough that I could see a generation or two of improvement pushing it beyond noticeability.