Adds Higher Internal Resolution with 2x, 3x and 4x sampling for the perspective track. Open Mods, enable Higher Internal Resolution, and select a scale. Adaptive Widescreen can be enabled separately. Sprites and HUD keep their original artwork.
- The course fly-in uses the selected sampling density before the race HUD appears.
- Roadside billboards extend into widescreen margins, including trees omitted by the original draw limits and sprites beyond signed X=255.
- Integrates the current engine fixes while preserving strict netplay compatibility checks.
Windows x64 ZIP and Linux x86_64 AppImage are below. Supply your own supported USA ROM and retail GBA BIOS; neither is included. Enhancements are optional and disabled by default.
Validation: both packaged platforms passed strict 6,000-frame boot checks. The actual Windows and Linux packages agreed on every paired-state byte at tick 360 in rollback and input-delay modes while using different views/scales. A fresh race fixture passed 72-frame view/scale differentials and restore/replay checks. Course-intro and margin-object checks cover Peach Circuit; broader course/prop coverage and long online sessions remain unverified.
Source and validation: release record. Thanks to @drencoss for the request in #12.

