My 1080 Ti gets around 2.5it/s with the k_lms sampler.
When I do batches, it slows down but not linearly; if 1x does 10 it/sec, 2x does about 6 it/sec. Batching is the other upside of more VRAM.
My 1080 Ti gets around 2.5it/s with the k_lms sampler.