Bug: (Hammer) Errors logging on message window lags Hammer

[darvil82]

Describe the bug

When Hammer starts loading assets, it is usual for it to encounter errors, which are logged on the Messages window. (Window > Messages)

You can experience pretty intense lag spikes when these errors are logged on the window. It seems like the entire text area flashes on each update.

Hiding the window by pressing the close button or just waiting for no more errors to log makes hammer perform like normally.

To Reproduce

1. (Optional) Ideally mount more games in mounts.kv so that this is more noticeable.
2. Open Hammer and make sure the messages window is active (it usually is).
3. Open a map.
4. Move around in the viewport to notice the lag while the errors appear on the messages window.

Issue Map

Any.

Expected Behavior

Logging messages shouldn't be laggy. It should perform fine. If not possible, hide this window by default. I rarely find it useful, other than when checking mounts.

Operating System

Windows 11