Moving fast raised the loading screen whenever the body outran terrain streaming. 1.12.1 never shows a screen there. Its tile pass (`0x6985d0`) blocks on each missing inner-window tile (`0x698689` → `0x443bd0`), so the frame hitches.
benilla now does the same. It requests every missing inner-window tile at once, waits for them in the frame, and builds them and their colliders untimed, during play and cinematics. The loading-screen backstop is gone. A read still hung after 10 s is waited on once, then streams on. A second defect fed this: a settled stream re-walked its window only at a tile crossing, so tiles ahead were requested late. It now re-walks on every chunk step.
Tests: outrunning the stream raises no screen, and a hung read costs one capped wait. Live, at speed ×100 across Kalimdor, no screen came up.
Fixes#1028Fixes#1823🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Sam Sung
8731395bd8