What FPS will I get in Garry's Mod at 1440p?

At 1440p Ultra native, expect around 0 FPS. With DLSS Quality you can push higher.

Does GeForce RTX 4090 GAMING AMP Extreme AIRO support DLSS or FSR in Garry's Mod?

Garry's Mod does not currently support upscalers.

Yes — the GeForce RTX 4090 GAMING AMP Extreme AIRO runs Garry's Mod at approximately 0 FPS at 1080p Ultra (native, no upscaling).

✕No — Too Weak

Expected: 0 FPS @ 1080p Ultra (native).