You can change the resolution. A coarse resolution might be adequate for fairly quick feedback. Then you can crank up the resolution when you're ready to genera

You can change the resolution. A coarse resolution might be adequate for fairly quick feedback. Then you can crank up the resolution when you're ready to generate the final output. Or you could even progressively update the preview. I wouldn't call it realtime though. Like you wouldn't be able to animate a changing SDF.