Tennis court at -132,74 scene messages freeze

[pravusjif]

Problem: After entering the tennis court, if there are other players around, the ball-throwing NPC freezes randomly for random times (the thrown ball also freezes in mid-air)

https://images.zenhubusercontent.com/337227404/d30c8022-3617-4ade-96cb-18291702c4dd/tennis_court_messages_freeze.mp4

Data gathered debugging:

• When the ball-throwing NPC freezes, that scene messages to the renderer stop being sent https://images.zenhubusercontent.com/337227404/8d4d7ecf-71ec-48ad-8e3d-8825129cb3bc/tennis_court_messages_freeze_debug.mp4

• The browser's performance profiler doesn't show anything strange nor time-consuming in that scene's webworker

• If the AvatarModifierArea used in the court area is toggled off in Unity in runtime, the problem persists https://images.zenhubusercontent.com/337227404/b7a9e68d-62dc-4c70-8e3e-b2336d74bddc/tennis_court_messages_freeze_without_avatarmodifierarea.mp4

• If we remove the AvatarModifierArea monobehaviour from its component prefab, the problem persists

• If we use LOCAL_COMMS to avoid having other players around the problem no longer happens

• If we deactivate the global scene GameObject before any avatar is instantiated, the problem no longer happens

I believe there is some issue with Kernel/SDK avatar/player events, otherwise this might be a problem in the scene's code logic. After having debugged in unity-side we should start debugging in kernel-side.

[pravusjif]

• Apparently the problem never appears when connecting through LOCALHOST.
• Whenever the scene execution unfreezes, we see the following FS.syncfs warning in the console:
• The scene dev is running more tests in production, hopefully some new clue will be discovered soon.

[JorgeDecentraland]

Issue in the scene