They list under hardware requirements "a powerful graphics card with at least 6 GB VRAM is recommended. Otherwise generating images will take very long" Does anyone have any idea what would very long mean on a 4GB VRAM card?
"Tested on a NVIDIA GeForce RTX 3050 under Ubuntu with 4GB VRAM. (...) lowered the canvas to 2Kx2K and it seems to just about be okay. My test prompt (...) produces a picture of rocks. (...) I get a nice scene (...) Both take about two minutes."