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 WINDFORCE 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 WINDFORCE runs Path of Exile 2 at approximately 237 FPS at 1080p Ultra (native, no upscaling).

✓Yes — Excellent

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