Suspend the FPS unlock while a demo-manager Exec (DD sub_82184460 / EM sub_821856F8) ticks, so the frame-locked IngameCinematics Sequencer plays at native ~30fps instead of double speed. Adds ac6_cutscene_clamp CVar (default on).
D3D12 previously assumed native point-list + geometry-shader expansion; that path can drop or rasterize points incorrectly (invisible missile trails). Default to the shared triangle-strip VS expansion path with an init-time CVar override.
Vulkan: default vulkan_force_expand_point_sprites_in_vs to true for the same behavior on non-D3D12 hosts.
Made-with: Cursor
Add a native SDL3 audio driver for non-Windows hosts and gate WASAPI to Windows-only builds, so Linux builds no longer depend on Windows headers while keeping runtime telemetry and queue behavior intact.
Made-with: Cursor
salh