Endless loading at Helios (Bas400) on 2.7.0 #982

Port version

v2.7.0

GPU and driver version

90

CPU

AMD Radeon RX 9070 XT, driver 32.0.31041.1004

What happened

Expected: the game finishes loading the Helios area (City of Olympia) and continues.

Actual: endless loading. The game keeps rendering (FPS overlay still updating), but the area never finishes loading. Happens every time, including when loading the autosave there. Previously reported in #701 on 2.5.0; still happens on 2.6.0 and 2.7.0.

The log shows the same pattern as #345 / #428: WAD Bas400 gets repeated alloc and ax8 lines, but never the fSize line. No STOP or Fault lines.

Already tried, no change: engine FPS 120 and 60, deferred_readback=0, stale_readback=0, async_shaders=0, restarting the PC. BAS400.WAD reads fully without errors.

Possibly related: commit a56acd6 in the Cosmo/gow3_xbox fork, "Fix the loading-screen hang: copy threads no longer wait for the GPU", referenced in #345 and #428.

Game: CUSA01715, version 01.02. Render resolution: native 1920x1080, borderless.

Steps to reproduce

1. Play through to the City of Olympia, after getting the Claws of Hades, and continue toward the Helios area.
2. The game autosaves and starts loading the next area (Bas400).
3. Loading never completes. The game keeps running, but the area never appears.
4. Loading that autosave again hangs the same way every time.

user/last_run.log

last_run_helios_bas400_v2.7.0.log

Screenshots or video

No response