# CRITICAL BUG - Clicking on Landscape tool causes UEFN to completely freeze! **URL:** \ **Category:** Issues and Bug Reporting\ **Tags:** Status-Closed, Reso-CannotReproduce, fortnite-creative, unreal-editor-for-fortnite, fortnite\ **Created:** [May 3, 2025, 11:54am UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308 "2025-05-03T11:54:09Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Brandisnappy](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Brandisnappy](https://forums.unrealengine.com/u/Brandisnappy)\ **Post date:** [May 3, 2025, 11:54am UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/1 "2025-05-03T11:54:09Z")
### Summary When i am working in UEFN, the moment i click on the landscape tool to work on my environment, UEFN completely freezes and does not work. The only way for me to fix it is for me to completely restart my PC and open it again. But if i try landscape again, the same issue happens. My island is quite large. ### Please select what you are reporting on: Unreal Editor for Fortnite ### What Type of Bug are you experiencing? Stability ### Steps to Reproduce Go into a large scale island with a large landscape Attempt to click on “the landscape tool” UEFN freezes and will not function ### Expected Result I would expect to be able to use my landscape tool without freezing or any other issues occurring. ### Observed Result UEFN completely freezes and any live edit session will disconnect as soon as i click on landscape. It makes landscaping completely impossible. ### Platform(s) PC PS5 ### Additional Notes This has only been happening since yesterdays update ---
**Author:** ![fantum\_uefn](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@fantum\_uefn](https://forums.unrealengine.com/u/fantum_uefn)\ **Post date:** [May 3, 2025, 12:24pm UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/3 "2025-05-03T12:24:38Z")
Having the same issue 😐 ---
**Author:** ![Brandisnappy](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Brandisnappy](https://forums.unrealengine.com/u/Brandisnappy)\ **Post date:** [May 3, 2025, 12:59pm UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/4 "2025-05-03T12:59:28Z")
Yeah its a huge issue which needs addressing ASAP I’ve verified my files, updated all drivers, restarted, turned down graphics, nothing worked. ---
**Author:** ![Hardcawcanary](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/hardcawcanary/32/906569_2.png) [@Hardcawcanary](https://forums.unrealengine.com/u/Hardcawcanary)\ **Post date:** [May 3, 2025, 3:35pm UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/5 "2025-05-03T15:35:10Z")
See if increasing your windows paging helps. I have a massive paging file 200GB and loading landscape shaders took longer than normal this update. Using the landscape tools it seems a bit more sluggish and I just crashed after using the noise and hydro tools for maybe 5 minutes. ---
**Author:** ![DorgieStudios](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/dorgiestudios/32/1187190_2.png) [@DorgieStudios](https://forums.unrealengine.com/u/DorgieStudios)\ **Post date:** [May 3, 2025, 5:13pm UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/6 "2025-05-03T17:13:47Z")
Same issue here, I am only able to reopen UEFN by killing it in task manager. ---
**Author:** ![euLegacy](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/eulegacy/32/940773_2.png) [@euLegacy](https://forums.unrealengine.com/u/euLegacy)\ **Post date:** [May 3, 2025, 10:22pm UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/7 "2025-05-03T22:22:36Z")
Having the same exact problem, everytime i need to close UEFN with the Task Manager. It started after v35.00 update. ---
**Author:** ![Maclobster](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/maclobster/32/1051732_2.png) [@Maclobster](https://forums.unrealengine.com/u/Maclobster)\ **Post date:** [May 4, 2025, 4:54am UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/8 "2025-05-04T04:54:13Z")
Exact the same here, when using landscape tool for 5 min, it freeze , need task Manager to close UEFN , since the last (star wars) update ---
**Author:** ![JEDI\_HIT\_GIRL](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@JEDI\_HIT\_GIRL](https://forums.unrealengine.com/u/JEDI_HIT_GIRL)\ **Post date:** [May 4, 2025, 8:15pm UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/9 "2025-05-04T20:15:32Z")
Same here, no work around can be found. ---
**Author:** ![Flak](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/flak/32/769441_2.png) [@Flak](https://forums.unrealengine.com/u/Flak)\ **Post date:** [May 5, 2025, 11:09am UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/10 "2025-05-05T11:09:11Z")
Thanks for the report, we’ll get someone to take a look. ---
**Author:** ![Brandisnappy](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Brandisnappy](https://forums.unrealengine.com/u/Brandisnappy)\ **Post date:** [May 5, 2025, 11:13am UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/11 "2025-05-05T11:13:26Z")
Thank you, its a pretty major bug preventing many of us from building AT ALL. The moment you click landscape, UEFN just freezes and the only way to fix it is restarting and opening UEFN again. Then it happens again. ---
**Author:** ![Brandisnappy](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Brandisnappy](https://forums.unrealengine.com/u/Brandisnappy)\ **Post date:** [May 5, 2025, 11:24am UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/12 "2025-05-05T11:24:29Z")
Just wanted to share some extra info. I have Verified my files I have turned my engine scalability to low I have restarted UEFN I have updated my drivers Nothing has helped. ---
**Author:** ![AtAshTag](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/atashtag/32/997253_2.png) [@AtAshTag](https://forums.unrealengine.com/u/AtAshTag)\ **Post date:** [May 5, 2025, 11:56am UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/13 "2025-05-05T11:56:19Z")
I have been using landscape with no issues for days. Ive tried various things to make my crash and i cannot make it happen. The only thing i would note is if you click on the output log/have it docked it can sometimes be slow initially but then catches up so maybe its something to do with that and for whatever reason my system catches up and yours in effect looks like a crash. Let me try video what i mean [![](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/c/f/7cfe6ef3e8b9d7a8676e0e584ea2fa56f3a48fd9.jpeg "Vid of landscape freezing uefn") ](https://www.youtube.com/watch?v=2rPZRFL8VZY) Although when docked it didnt go slow in the video the first time i tried it did but im not gunna restart my uefn to test just maybe try undock the log before opening the landscape thing… worth a try I restarted 🙂 Its deffo slower [![](https://d3kjluh73b9h9o.cloudfront.net/original/4X/c/0/7/c07389291f9994d578e848d2ef97cf90d55569d4.jpeg "Landscape freeze after initial load up") ](https://www.youtube.com/watch?v=3Wj_qtP3RQM) ---
**Author:** ![TheWildslice](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thewildslice/32/1059474_2.png) [@TheWildslice](https://forums.unrealengine.com/u/TheWildslice)\ **Post date:** [May 5, 2025, 12:17pm UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/14 "2025-05-05T12:17:42Z")
Yea im having the same issue. It does the same when adding water to a landscape too. ---
**Author:** ![DorgieStudios](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/dorgiestudios/32/1187190_2.png) [@DorgieStudios](https://forums.unrealengine.com/u/DorgieStudios)\ **Post date:** [May 5, 2025, 3:55pm UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/15 "2025-05-05T15:55:37Z")
Are you using a custom landscape material? I believe it only happens with a custom landscape material. Can we see if we can confirm this, **anyone** seeing this **respond** with whether or not **you are using a custom material** and whether or not **you are crashing**. ---
**Author:** ![AtAshTag](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/atashtag/32/997253_2.png) [@AtAshTag](https://forums.unrealengine.com/u/AtAshTag)\ **Post date:** [May 5, 2025, 3:56pm UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/16 "2025-05-05T15:56:52Z")
No just the normal epic one i didnt see anyone mention custom material so i didnt try that. Is it only custom material ? ---
**Author:** ![DorgieStudios](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/dorgiestudios/32/1187190_2.png) [@DorgieStudios](https://forums.unrealengine.com/u/DorgieStudios)\ **Post date:** [May 5, 2025, 3:59pm UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/17 "2025-05-05T15:59:35Z")
Idk, but for example - you. You are using default and seeing minimal issues, I’ve only seen crashes/issues from people using custom ones, so it has raised a thought. ---
**Author:** ![Hardcawcanary](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/hardcawcanary/32/906569_2.png) [@Hardcawcanary](https://forums.unrealengine.com/u/Hardcawcanary)\ **Post date:** [May 6, 2025, 4:31am UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/18 "2025-05-06T04:31:32Z")
You could be correct, @Brandisnappy are you using custom materials ? I’m not using custom materials, but I can use Landscape Mode. This update I’m getting UEFN crashing while randomly using Noise, Flatten or Shift-Sculpt tools. 3 crashes in 1 hour, moving on to something else until it gets fixed The landscape is heavily sculpted & paint detailed ---
**Author:** ![TheWildslice](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thewildslice/32/1059474_2.png) [@TheWildslice](https://forums.unrealengine.com/u/TheWildslice)\ **Post date:** [May 6, 2025, 9:28am UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/19 "2025-05-06T09:28:15Z")
Ive tried custom materials and normal and both crash. Ive even tried materials ive made my self which just contain base colored cliff and grass textures from the landscape folder to make it as simple as it gets but i still crash. Even using a 1x1 landscape with no material cashes crashing. ---
**Author:** ![Hardcawcanary](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/hardcawcanary/32/906569_2.png) [@Hardcawcanary](https://forums.unrealengine.com/u/Hardcawcanary)\ **Post date:** [May 7, 2025, 2:12am UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/20 "2025-05-07T02:12:42Z")
Hows the update that just happened going for you ? The sluggishness seems to have gone and I’ve been using the Sculpt Tools without a crash for half an hour. ---
**Author:** ![TheWildslice](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thewildslice/32/1059474_2.png) [@TheWildslice](https://forums.unrealengine.com/u/TheWildslice)\ **Post date:** [May 7, 2025, 9:56am UTC](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308/21 "2025-05-07T09:56:58Z")
Ive stopped crashing when painting landscapes but if i try sculpt old ones, it crashes. If i make a new landscape and sculpt its fine until i close the editor and reopen it. Then it crashes again [Next page](https://forums.unrealengine.com/t/critical-bug-clicking-on-landscape-tool-causes-uefn-to-completely-freeze/2488308.md?page=2)