Hi, I just new learn unreal engine, I’d like to ask why anytime I try to use foliage on landscape mode always getting drop FPS to below 30? Mesh I try to add in this scenario grass from the Megascans. Any solution for my issue? I’m using GTX 1650 (PS Edit: The current grass used from procedural nature pack)
Welcome to placing foliage 
Populating your level with a lot of actors, even if they are instanced ( like foliage ), will always take a hit, and is a balancing act at the best of times.
Off the top of my head, ways to fix grass problems are:
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Use a simple mesh ( less than 1k polys )
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Combine several grass meshes into a clump, if this is not already done for you. Place the clumps.
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Make sure they’re not overlapping
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Make sure the grass mesh has a very efficient LOD system. Basically, if you’re not putting your nose on the mesh, it should be at about LOD 2.
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Ensure the material is pretty simple
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Setup the foliage cull distance correctly
And many, many more…
Hi @ClockworkOcean thank you for the answers. I’ve try your suggest and can get that FPS up again, but I don’t get it for your answer number 2 and 3, if you don’t mind to give some example clumps mean and overlapping grass? or are you meaning the overlap from density of the grass?
I mean don’t use this:
use something like this:
As for (3), if you crank the density right up, you’ll start to overlap the meshes, which is just a waste of resources.
Overlapping:
Not overlapping:
PS: You can make the clump mesh if you don’t have one, very easily using ‘merge actors’.
Oh I see, okay then @ClockworkOcean for the explanation, get better now in my head for it. Thank you
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