I hope so. Problem is render target memory and resolution. For 4k map landscape brush allocates up to 8 high quality render targets with min. 100mb memory size on gpu (you can check textures in landscape brush). When you paint each of this render targets need to be updated on tick(when you trying to paint), 800 mb of memory or 4096^2*8=134,217,728 pixels…
in 5.1 when you dragging water spline it will not show updates, after drag it will be updated → this way it works at 4k resolution. But problem that you need to see sculpt in realtime… you can’t freeze update until drag is done. I hope they will solve this memory problem, for example create small local render targets for each landscape component (updating them will be much faster and responsive) and after paint merge them to final target texture (still freeze for a 1-2 sec but whatever)
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