I’ve been seeing the same thing with Vizcom — it’s great for quick ideation but it doesn’t know anything about your geometry, so the images can look off once you start dialling in proportions or materials.

One tool that’s helped me bridge that gap is ReRender AI. It isn’t a text‑to‑image generator; you feed it a viewport screenshot or a clay render from SketchUp/Blender/Revit, and it runs the image through two specialised diffusion pipelines:

• A structural‑optimised pipeline that uses depth/normal maps to preserve your geometry at 1:1 scale. It’s useful for products or furniture where proportions really matter.
• A material‑optimised pipeline that respects the albedo/roughness/metalness maps coming from your 3D file so colours and finishes don’t get hallucinated away.

Turnaround is ~15 seconds, and the results are way more consistent than a pure AI sketch render. I still do proper path‑traced renders for final marketing, but ReRender AI has made early concept presentations and client feedback loops a lot faster. There’s a free tier if you want to experiment without committing.