What if the 3D view does not start?
The studio needs WebGL 2 with hardware acceleration. If it says the viewer could not start, turn on hardware acceleration in your browser's settings (in Chrome: Settings → System → Use graphics acceleration when available), update the browser, and restart it. Remote desktops and some virtual machines have no graphics card to offer.
Why is Render slow, or missing effects?
The full Render runs on WebGPU: use a current Chrome or Edge, or Safari on macOS or iOS 26 or newer. Without it, Render uses a slower WebGL path tracer with fewer effects, and the studio says so. A laptop on battery may run its graphics card slower; plug it in. Pick a lower Render quality for previews and keep 1,024 passes for the final image.
“The graphics card paused the 3D view”
The graphics driver can reset when it runs short of memory or the computer sleeps. The view usually comes back on its own; if it does not, reload the page. Your work is saved on this device, and the studio offers to resume it.
What if a file is too big or opens empty?
One design may hold up to 10,000,000 triangles. A casting STL can be far denser than the render needs: export a lighter mesh, or a GLB, from your CAD program. A 3DM that opens empty has no saved render meshes; save it with render meshes.
Turntable video will not export
Video export needs WebCodecs, which current desktop browsers have. Keep the tab visible while a quick recording runs. If a long Render video is too slow, use Interactive for the turntable or fewer passes per frame.
Reporting a problem
In the studio, open Help → Report a problem. It shows exactly what is sent with your message before you send it: the app version, your browser and graphics card, whether WebGPU is available, the window size and the last error reference. You can attach your open design; it is emailed to us only and not stored. We reply from hello@thejart.com within two working days, or use the contact page.