The primary criticism of the base game on Switch was the resolution. In handheld mode, it struggled to hit 720p, often dipping into sub-HD territory that made the murky corridors of Mars look muddy.

Update 1.0.3 introduced a dynamic resolution scaler to the handheld mode.

Tests conducted on a standard Switch (Mariko) with Doom (1993) at 720p/60fps target.

| Metric | v102 | v103 (Best Practice) | Improvement | |--------|------|----------------------|--------------| | Avg frame time (ms) | 17.2 | 16.7 | +2.9% | | Level load time (E1M1) | 4.2 sec | 2.4 sec | 42.8% faster | | Memory usage (idle menu) | 184 MB | 142 MB | -22.8% | | Input lag (Pro Controller) | 58 ms | 52 ms | -10.3% |

Note: Users who applied Update 103 via delta patching without clearing shader cache saw a 15% performance regression.

Doom NSP Update 103 refers to a specific firmware/game update package for the Nintendo Switch version of Doom distributed as an NSP file (Nintendo Submission Package). It typically contains bug fixes, gameplay tweaks, performance improvements, and occasionally new features or content patches for the game.