Landscape mode Smooth and Flatten Brushes not working UE 5.2 on Max Ventura 13.4

Development Asset Creation
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I’m running UE5.2 on Mac M2. In landscape mode the Smooth and Flatten brushes are not working properly. They gouge out deep chunks of the landscape; making deep holes in the hill or mountain I’m trying to create. Tool strength and brush falloff are set as default. Please help; it’s driving me insane. Especially as I’m still learning.

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I’m having the same problem and its happening with the erosion tool as well. Even when I turn settings down to minimal. Went back to 5.1 and same problem - also on Max Ventura 13.4.

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I resolved this issue by turning-off “combined layers operation” check-box under tool strength. Should be same for you on the Flatten, Smooth, Erosion and Hydro tools. Cheers.

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Yes that worked. Thank you so much mavrix22. This really is a great solution and massive help. Thank you.

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Did that and now none of them work at all. I’ll keep looking… thanks anyway.

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thank you

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Thank you so much mavrix22

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Thank you so much it was frustrating for me when I was following the tutorial but found my flatten tool didn’t work as the tutorial did, and I was so confused, now I finally found peace, thank you sir!!!

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My problem was on the layers, when I turned off the visibility of the other layer (roads), my problem was solved.
I just left the main layer (terrain) visible and voilá!
But thanks anyways!

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Same here…
Have you found a solution already?