I am seeing very long save times when trying to exit a world in the snapshot releases. I have seen this since trying out the snapshots a couple weeks ago and is still occurring with the latest version. It takes anywhere from 45 seconds to over 1 minute to exit a world.
Steps to create issue:
Create new world using default settings
Exit game
I have tried various options such as game mode and world type settings as well as re-creating a 1.15.2 world and I have the same issue. Logging out of worlds with version 1.15.2 only takes a few seconds.
Including a screenshot of the "F3" screen and the world gen settings.
Computer Specs:
Lenovo Legion Y730
Intel Core i7-8750M
GeForce GTX 1050 Ti
16 GB RAM
256 GB SSD ("/") and 2TB hard drive ("/home")
Thank you for your report, please add your specs to MC-185363! Thank you! 🙂