This is TechnoGenuine, few days I flashed One UI 2.5 on my Galaxy Note 9 and I must say it has been an amazing experience so far.
Few things to mention:
1. Yellow Tint discoloration has been fixed, the display is more crisp and dark.
2. Wireless DeX and Good Lock 2020 Compatibility
3. Solid Performance and Battery Life
4. Video Pro Mode enhancements
5. No more overheating!
I made couple of videos and arranged them in playlist that you might be interested to watch. One UI 2.5 Features Playlist