[Major Performance Bug] Game Freezes for 30+ Seconds When Spawning Blueprints After Long Play Sessio

Frequency: Always reproducible after 1.5-2 hours of continuous play in the same save.

Summary:

After playing in a single world for an extended period (approximately 1.5-2 hours), the game's performance when using Creative Mode tools degrades catastrophically. The blueprint menu (G) becomes extremely laggy, and attempting to spawn any medium or large blueprint causes the game to freeze completely for 20 to 40 seconds. This bug makes creative building and world editing impossible and forces a full game restart to temporarily fix it.

Detailed Steps to Reproduce:

1. Start a creative world or a survival world with creative tools enabled.

2. Play normally for 1.5-2 hours (building, flying, possibly spawning a few smaller items).

3. After this time, press G to open the Blueprint menu.

4. Observe the significant lag when opening the menu and navigating through it (delayed pop-up, stuttering animations).

5. Select any medium or large blueprint and press Place.

6. Observed Result: The game will freeze completely. The image on screen will lock up, sound may stutter or stop, and the interface becomes unresponsive for a period of 20 to 40 seconds. After this long freeze, the blueprint finally appears in the world.

7. The issue persists and worsens with subsequent spawning attempts. The only temporary solution is to close and restart the game entirely.

Expected Result:

The blueprint should spawn within a few seconds (1-5 seconds) without causing a major freeze, regardless of play session length.

Additional Information / Possible Cause:

· The problem seems to be cumulative; it does not occur at the beginning of a play session.

· Restarting the game provides a temporary fix, suggesting a possible memory leak or resource caching issue related to loading grid models and assets.

· The freeze duration is proportional to the complexity/size of the blueprint.

· This bug severely impacts the core creative gameplay loop for players who enjoy building and experimenting over long sessions.

Impact: Critical for players using creative tools. Transforms the building experience from fun to frustrating.