What FPS will I get in Path of Exile 2 at 1440p?

At 1440p Ultra native, expect around 173 FPS. With DLSS Quality you can push higher.

Does GeForce RTX 4090 GAMING AMP Extreme AIRO support DLSS or FSR in Path of Exile 2?

Yes — Path of Exile 2 supports dlss2, dlss3, frame_gen_dlss.

Yes — the GeForce RTX 4090 GAMING AMP Extreme AIRO runs Path of Exile 2 at approximately 237 FPS at 1080p Ultra (native, no upscaling).

✓Yes — Excellent

Expected: 237 FPS @ 1080p Ultra (native).