This update contains the following fixes and improvements:
Fixed a bug that caused clients to send instance variable updates for variables received from another client.
Reduced the amount of data that needs to be sent when connecting to the server. This makes it easier for people with bad internet connections to connect and login.
Version 2.5.2b: Fixed an edge-case where connecting could fail
Please note: Although I'm releasing this update today, I do not want to create any expectation of future updates. GameMaker Server is at its end of life, and is no longer actively developed. The server will remain online at least until the end of 2023.