To solve the "burn-in" problem, a zip that disables the automatic contrast is needed, it must be passed via magisk. In addition, RGB must be configured. (By default it comes in 256 all colors, red, green and blue). Below I will leave the steps to be followed:
1- Have magisk installed to be able to pass the zip miui_disabler.zip
2-As soon as the file passes, restart the device.
3- After that, download an app to edit the colors (smartpack, FK kernel manager and etc.) put all the colors in 220, save and place to do the auterations when the device turns on.
Attention: Works better with kernel with Kcal support. I will try to put the zip link here if it is not possible look for the link for the device group on the telegram.
I AM TAKING INTO CONSIDERATION THAT I ALREADY HAVE A MODIFIED RECOVERY INSTALLED.