MacOS/Steam issue and workaround

Computer: MacBook Pro 16", M1 Max, 64GB RAM.
Client: Steam client.
Issue start: 3.25 patch (possibly a few days later).
Error messages: "Disconnected - Failed to connect to instance" / "Unable to connect to login server"

Detailed description:

On load, if I wait too much, I will not be able to log in (Unable to connect error).

If I connect, at most times I will see missing details on the characters in the character selection screen. On selecting a character when this is the case, the game will either crash or boot me out to the login screen, where I will not be able to connect, with the error that I have been disconnected due to failing to connect to instance.

Workaround:

1. Wait in the character selection loading screen for a few minutes.
2. It will not allow to login, but then on the next load it will successfully login / choose character / play.

Candidate for error / solution:

Check if asynchronous asset loading in MacOS behaves differently (return value different, causing "loading" and "loaded" to return the same), causing the loader to use assets before they are loaded.

Reasoning:

If the issue is with asynchronous load, then the data being cached could possibly avoid the error.