Running latest version of Zwift on Apple TV 4K. When doing any kind of training ride, every time there is a red zone effort, if it ends with going through either a blue or white arch to a Zone 1 or 2 effort, the graphics look awful outside the arch but normal inside the arch. This happens as my avatar approaches the white or blue arch EVERY SINGLE TIME in this scenario. It does not seem to happen during any other effort level.
See attached screen shot.
Jon, Iām happy to tell you that this isnāt a bug, but a āfeatureā that you can turn off in the in-game settings.
Itās called āWorkout Pain Effectā and distorts your screen in the same way that your eyesight is supposed to be affected (negatively) when doing really hard efforts.
When riding, go into the āMenuā, go to āSettingsā and un-toggle āWorkout Pain Effectā.
Sorted.
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Ohhhhhh.
Iāve been annoyed by this āfeatureā for a long time. It took me a while to see the pattern of when it happens. There should be a more obvious explanation of it within the game.
Thanks so much for explaining it. Iām turning it off ASAP.
Ride On!
Jon
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Couldnāt agree with you more! The first few times I experienced it, I thought I had a problem with my equipment being defective. 
I was lucky to stumble across the explanation in some intro video on YouTube. Since then, when Iāve seen it brought up here or on Reddit, I havenāt seen a single person support it.
I can understand that the developers who came up with the idea loved it and decided to leave it in, but I fail to see how it adds anything positive to the rider experience. From my perspective, it just contributes further stress when weāre already in a dark place. Zwift could at least leave it off by default, surely?
Ride On, man! 
Looks like Roule already explained it, but just for added info, you can find a description of the Workout Pain Effect in this related article.
But yeah, for those who donāt like that effect, good thing thereās an easy way to disable it.
Ride On.
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