What FPS will I get in Last Epoch at 1440p?

At 1440p Ultra native, expect around 144 FPS. With DLSS Quality you can push higher.

Does GeForce RTX 4090 ROG Matrix Platinum support DLSS or FSR in Last Epoch?

Yes — Last Epoch supports dlss2, dlss3, frame_gen_dlss.

Yes — the GeForce RTX 4090 ROG Matrix Platinum runs Last Epoch at approximately 195 FPS at 1080p Ultra (native, no upscaling).

✓Yes — Excellent

Expected: 195 FPS @ 1080p Ultra (native). This GeForce RTX 4090 ROG Matrix Platinum is currently $8699.97 at Amazon ↗