What FPS will I get in Poppy Playtime at 1440p?

At 1440p Ultra native, expect around 180 FPS. With DLSS Quality you can push higher.

Does GeForce RTX 5090 VCG509032TFXPB1 support DLSS or FSR in Poppy Playtime?

Yes — Poppy Playtime supports dlss2.

Yes — the GeForce RTX 5090 VCG509032TFXPB1 runs Poppy Playtime at approximately 240 FPS at 1080p Ultra (native, no upscaling).

✓Yes — Excellent

Expected: 240 FPS @ 1080p Ultra (native).