this worked! thanks
Done
THIS worked for me. Unreal 5.3 here. Thank you.
I find this only works as long as there is no printing on the screen.
So if you have “show FPS” enabled, the message will persist.
Ugh.
4 Likes
ty for update, something for the lesser of us who can’t afford a POWERhouse system of every component, must it seems, deal with.
I may have found a way to fix this bug on the 5.3.
On the Outliner, find Landscape, right-click it and press Validate.
It worked for me.
lol, Validate is untickable
The real fix is in CL 27191295 from epic mainline (not been released in any public UE version yet).
It’s a one line change in ULandscapeComponent::UpdatePhysicalMaterialTasks()
Find this line in LandscapeEdit.cpp:
// Clear the renderable physical material properties as we don’t need them :
and add this line above it:
PhysicalMaterialHash = Hash;
3 Likes
hey, I tried this, but the “Validate” option is in grey and cant press it, do you know why?
UE 5.3, got this after creating new empty level, and clean pice of landscape. Suggestion above didn’t work. Any kind of "build"s neither.
Solution was - just press ‘play’ btn 
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nice, good job
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wow! Can’t believe this was the issue. Thank you kindly!
it doesn’t work for me, look:
Thank you! That actually worked. Basically, this must be a bug, since so many different solutions “un-glitch” it. Your solution is likely the simplest: switching the Play Mode to “Play in Selected Viewport” once clears the error. I was then able to switch back to “Play in New Editor Window” without the error message reappearing. 
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This worked for me in 5.3. Weird! Thank you.
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This fixed it for me.
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In my case I have turned off Show stats and this error vanished.
None of the above worked for me on UE 5.3.2
After that, I just once changed my gameplay mode, hit the “Play the game” button and it vanished 
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Uncheck “Show FPS” solved the Problem for me. Engine version 5.3
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