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UE4.12 and 4.11 unresponsive adding static mesh instance from open world demo collection

When adding static meshes into the viewport or the procedural foliage generator:



The editor becomes unresponsive. In the procedural foliage generator it becomes unresponsive and the shader tasks run and finnish in the Task Manager.

Setup: AMD FX-8350 Nvidia Gtx 970 STRIX Latest driver 16 gb at 1600 Mhz of DDR3 Ram Windows 10

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Product Version: UE 4.12
ue4bug.png (10.2 kB)
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asked Sep 19 '16 at 06:25 AM in Everything Else

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2 answers: sort voted first

Here is what I suggest. You are welcome to use the assets and they will still look good enough under these settings: Take all of the texture maps and go down one power of 2 in size (for example 4096 - 2048). Also once you have opened the static mesh in the editor set the minimum LOD to 1. This will force it to render at LOD1 with 4,317 triangles and it still looks good. alt text

Once you have opened the asset you have officially loaded it and you shouldn't have to wait a long time again to open it. It is up to you if you want to use other assets or if you want to deal with the long initial load times. To get around the load times maybe you can load the assets during lunch time for example.

Hope that helps,

Ed Burgess

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answered Sep 20 '16 at 01:09 PM

avatar image Voxtan York Aug 05 '17 at 02:21 AM

Thanks for this post Ed. I have an i7-7700K / GTX1080TI 11GB/ 16 GB RAM PC and it took about 15 to 30 minutes to open the HillTree_02 mesh the first time. After setting minimum LOD to 1 and saving the mesh, it now loads in 1 to 2 seconds. So be patient, this is a beautiful tree worth the initial wait. Double click it and go grab some coffee, beer or anything to distract you for a bit. You should be good to go after a while, depending on your PC specs. Cheers.

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Hi axelrotter,

The open world kite demo assets are very high poly and have many very hi-res texture maps (2-4k) applied. Trying to add assets like this will cause a lot of hang time. I would recommend that you use one of the LODs for the static mesh instead and lower the resolution of the textures used. Let me know if that helps.

Just to be safe I plan to test these assets later to make sure nothing is broken.

hope that helps,

Ed Burgess

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answered Sep 19 '16 at 06:31 PM

avatar image Ed Burgess ♦♦ STAFF Sep 19 '16 at 07:29 PM

Just to follow up, I was able to paint the HillTree_02 static mesh from the kite demo as a foliage actor. I first had to open the tree in the static mesh editor and load the asset (this process took nearly an hour even on our machines). After the asset was able to be opened in the static mesh editor I changed the minimum LOD to render to 1 (for performance sake). I then applied it as a foliage actor to paint.

avatar image axelrotter Sep 20 '16 at 11:55 AM

News here. The HillTree_02 Mesh does load in after a unknown amount of time (I let it load in over the evening). Thanks for the awesome and quick support!

My objective is making a landscape that looks awesome and thought about using these meshes to realize this project. Should I do the LOD process you describe and invest the time to open all meshes? Or do you know of lower res texture maps that I can use for free?

With best regards,


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