A build check warning in the area "Performance budgets". A warning: the game still publishes, but fix it when you can.
The build check runs on every game LobbyLab builds, and each problem it finds has a stable code, the exact message, the file and line when it names one, and a link to this page.
What the check looks at
Budgets for server tick time, bandwidth per player, view and state size, bundle and page size, and client rendering (pixel ratio, shadows, object counts, adaptive quality). A missed budget is a warning: the game still publishes.
How to fix it
Keep the kit's adaptive quality on, so slower phones stay smooth.
Follow the fix the warning prints. Send less per frame, cap the pixel ratio, reuse geometry and materials, and keep adaptive quality on.
See also: every error code, the API reference and the docs.