Hi Pietro,

if you use the Netflix App Netflix_4.16.1_ZJ_HDFix.apk from this side
https://forum.freaktab.com/forum/tv-player-support/beelink-aa/beelink-android-tv-box/gt1-ultimate/firmware-roms-tools-ch/778516-rom-beelink-gt1-a-ultimate-sn-agta-alvatech-standard-android-7-1-2-widevine-l1-drm-netflix-certified?p=792805#post792805
then the screensaver will not start during watching movies and it will play the Videos in HD. The virtual mouse pointer from Xgimi is working too.
Before you install the alternative Netflix App you must uninstall the App from XTV Manager.
Download Netflix_4.16.1_ZJ_HDFix.apk, sideload and install it from an USB drive.
The XTV Netflix App is under system apps but the Netflix_4.16.1_ZJ_HDFix.apk will install under normal apps.