# Landscape Tessellation Issue **URL:** \ **Category:** Rendering\ **Tags:** unreal-engine\ **Created:** [March 25, 2016, 3:11pm UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308 "2016-03-25T15:11:24Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Maximum-Dev](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Maximum-Dev](https://forums.unrealengine.com/u/Maximum-Dev)\ **Post date:** [March 25, 2016, 3:11pm UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/1 "2016-03-25T15:11:24Z")
Hello, I was going through my entire material setup to pin point what is really making my level lose so much FPS. I am now surprised to see this. I have put this simple setup below to demonstrate the. **Created new material and applied to landscape.** > **[Free New PNG Images with Transparent Backgrounds - FastPNG.com](https://fastpng.com/new)** > > Download New PNG images 100% Free incl. transparent background New PNGs. Get 100+ High Quality New PNGs with many resolutions. **Notice the FPS.** > **[Free New PNG Images with Transparent Backgrounds - FastPNG.com](https://fastpng.com/new)** > > Download New PNG images 100% Free incl. transparent background New PNGs. Get 100+ High Quality New PNGs with many resolutions. **Now I check flat tessellation. Notice I have not tessellated the landscape yet at all. Nothing connected to pins. Wireframe also shows landscape is not tessellated.** > **[Free New PNG Images with Transparent Backgrounds - FastPNG.com](https://fastpng.com/new)** > > Download New PNG images 100% Free incl. transparent background New PNGs. Get 100+ High Quality New PNGs with many resolutions. **Notice the FPS**. > **[Free New PNG Images with Transparent Backgrounds - FastPNG.com](https://fastpng.com/new)** > > Download New PNG images 100% Free incl. transparent background New PNGs. Get 100+ High Quality New PNGs with many resolutions. **What is happening?** ---
**Author:** ![Filly\_The\_Owl](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Filly\_The\_Owl](https://forums.unrealengine.com/u/Filly_The_Owl)\ **Post date:** [March 25, 2016, 3:19pm UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/2 "2016-03-25T15:19:21Z")
go into wireframe mode and you see ^^ ---
**Author:** ![Maximum-Dev](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Maximum-Dev](https://forums.unrealengine.com/u/Maximum-Dev)\ **Post date:** [March 25, 2016, 3:42pm UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/3 "2016-03-25T15:42:17Z")
> [@](#): > > Wireframe also shows landscape is not tessellated. It actually does nothing until you give a value to the multiplier pin. So like 70 FPS is being lost for nothing. ---
**Author:** ![Maximum-Dev](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Maximum-Dev](https://forums.unrealengine.com/u/Maximum-Dev)\ **Post date:** [March 26, 2016, 3:30pm UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/4 "2016-03-26T15:30:21Z")
Bump… ---
**Author:** ![Filly\_The\_Owl](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Filly\_The\_Owl](https://forums.unrealengine.com/u/Filly_The_Owl)\ **Post date:** [March 26, 2016, 3:34pm UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/5 "2016-03-26T15:34:34Z")
I didnt read it properly. Thats quite bad. im sorry D: ---
**Author:** ![Maximum-Dev](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Maximum-Dev](https://forums.unrealengine.com/u/Maximum-Dev)\ **Post date:** [March 27, 2016, 5:41pm UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/6 "2016-03-27T17:41:47Z")
Super bump… ---
**Author:** ![Chesire](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Chesire](https://forums.unrealengine.com/u/Chesire)\ **Post date:** [March 27, 2016, 8:37pm UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/7 "2016-03-27T20:37:13Z")
Very frustrating no doubt! Did you repro it on a empty scene with just a stock landscape (meaning no heightmap fluff as in your example, just a flat plane) and a simple mat again? If it happens there as well we can scrape a bunch of options out the book. ---
**Author:** ![Chesire](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Chesire](https://forums.unrealengine.com/u/Chesire)\ **Post date:** [March 27, 2016, 8:38pm UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/8 "2016-03-27T20:38:53Z")
Also check these 2 things: -In render options (project settings) do you have Heightfield GI on? (probably not but just making sure). -Also in render options (project settings) is dynamic tessellation set on default? (it should be at 48 I think). ---
**Author:** ![Hevedy](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Hevedy](https://forums.unrealengine.com/u/Hevedy)\ **Post date:** [March 27, 2016, 8:41pm UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/9 "2016-03-27T20:41:31Z")
Well then uncheck the tessellation in the landscape, the problems with the Tessellation + Landscape are well know. Why you need the tessellation ? Report this better in Answerhub. ---
**Author:** ![Maximum-Dev](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Maximum-Dev](https://forums.unrealengine.com/u/Maximum-Dev)\ **Post date:** [March 27, 2016, 10:52pm UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/10 "2016-03-27T22:52:53Z")
> [@Chesire;500987](#): > > Also check these 2 things: > > -In render options (project settings) do you have Heightfield GI on? (probably not but just making sure). > -Also in render options (project settings) is dynamic tessellation set on default? (it should be at 48 I think). Tried on flat plane in new project, new map. Same result. No GI. Dynamic tessellation is set to 48. Tessellation is vital for me at the moment but still the same huge performance drop without actually witnessing any change. ---
**Author:** ![Chesire](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Chesire](https://forums.unrealengine.com/u/Chesire)\ **Post date:** [March 28, 2016, 1:32am UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/11 "2016-03-28T01:32:00Z")
Just tried this on the LandscapeMountains demo from the Marketplace and I have not much of a performance hit, regardless of flat or pn tessellation. That’s probably due to my uber GPU though. What happens if you hook up a basic shader? ![f2d42a6867ab735f516debd6006cc1693080d2f0.jpeg](https://d1ap1mz92jnks1.cloudfront.net/images/transparent.png) ---
**Author:** ![Maximum-Dev](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Maximum-Dev](https://forums.unrealengine.com/u/Maximum-Dev)\ **Post date:** [March 28, 2016, 9:52am UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/12 "2016-03-28T09:52:10Z")
Still same drop. The bigger the landscape, the more obvious the problem becomes. On 2k landscape I almost don’t get that much drop. On 8k landscape I get 70-80 FPS drop. (970 + 4790K + 16GB). ---
**Author:** ![Filly\_The\_Owl](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Filly\_The\_Owl](https://forums.unrealengine.com/u/Filly_The_Owl)\ **Post date:** [March 28, 2016, 10:36am UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/13 "2016-03-28T10:36:35Z")
have you tried fiddling around with the lods of the landscape? ---
**Author:** ![Sitrec](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sitrec](https://forums.unrealengine.com/u/Sitrec)\ **Post date:** [March 28, 2016, 11:11am UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/14 "2016-03-28T11:11:41Z")
I have the same problem. I’ve tried everything I can think of and the performance hit is just too big for landscape. I think I read that Epic is aware of this and they said there is a lot of optimization still to be done. No idea if there are any plans to fix it though. Currently it’s too costly for us to use. ---
**Author:** ![Hevedy](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Hevedy](https://forums.unrealengine.com/u/Hevedy)\ **Post date:** [March 28, 2016, 11:13am UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/15 "2016-03-28T11:13:41Z")
Why you need Tessellation ? Use POM or Bump Map probably better. ---
**Author:** ![Maximum-Dev](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Maximum-Dev](https://forums.unrealengine.com/u/Maximum-Dev)\ **Post date:** [March 28, 2016, 11:43am UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/16 "2016-03-28T11:43:38Z")
@Filly_The_Owl, It helps a little… not that much. @Hevedy, I need it specifically for blending static meshes to landscape better. POM looks 3D from top down but at intersections with meshes it looks very fake. Would be nice if at least Epic say they are or are not going to fix this. ---
**Author:** ![Sitrec](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sitrec](https://forums.unrealengine.com/u/Sitrec)\ **Post date:** [March 29, 2016, 7:10pm UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/17 "2016-03-29T19:10:00Z")
> [@Hevedy;501206](#): > > Why you need Tessellation ? Use POM or Bump Map probably better. POM works fine with for some materials but Dispalcement works better for others and it blends better. ---
**Author:** ![Maximum-Dev](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Maximum-Dev](https://forums.unrealengine.com/u/Maximum-Dev)\ **Post date:** [April 6, 2016, 11:40am UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/18 "2016-04-06T11:40:07Z")
Any Epic word on this? 🙂 ---
**Author:** ![Sitrec](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sitrec](https://forums.unrealengine.com/u/Sitrec)\ **Post date:** [April 6, 2016, 3:33pm UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/19 "2016-04-06T15:33:58Z")
> [@Maximum-Dev;507159](#): > > Any Epic word on this? 🙂 I’d like ! ---
**Author:** ![CheapModeler](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@CheapModeler](https://forums.unrealengine.com/u/CheapModeler)\ **Post date:** [April 7, 2016, 2:17pm UTC](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308/20 "2016-04-07T14:17:58Z")
Any updates on this? [Next page](https://forums.unrealengine.com/t/landscape-tessellation-issue/59308.md?page=2)