Screen dimmed automaticly while cycling (Epix on the handlebar)

I think this is not a BUG, but Garmin didn't count with the usage described in the title.

Settings: workout - max brightness and AOD on. Gestures on or off, doesn't matter.

Previously I used all of my Fenixes as a bike computer too, attached to the handlebar (Garmin has 2 kind of mounters for this purpose, so the watch "officially usable" for this).

After 8-15 seconds of no touch (and no gestures), the screen dims and if the sunlight is strong, I can't see anything on the display. If the sky is cloudy then I barely see the datas, but nothing as close as with my previous Fenix6.

Can you suggest something to change this behaviour? I want a bright screen for the whole workout.