Slow change between clock screen and other button

Good evening, I encountered this bug with my Garmin Fenix 6X Pro, using the beta version of firmware 20.03 (same issue with version 20.01).

The bug is a slowdown when trying to switch from the main watch screen (I'm using a standard watchface, and not downloaded from Connect IQ) to the widget page(or press the others button). Pressing the scroll button, in fact, passes approximately 1 or 2 seconds between the change of one screen and the other.

This only happens the first time after the clock is not used for about a minute, because if I try to do it later, the page switching speed is instantaneous. The same happens if I try to switch from the main screen to any other. There is always a few seconds of delay. It looks as if the screen goes into standby, then works instantly after being reactivated. Nothing happen during acitivity or with bluetooth paired with a phone.

This does not happen with the latest public release 19.20. I can give you the security, as I tried to install it again.