# Performance Problems when too many objects on screen

**URL:** <https://forums.unrealengine.com/t/performance-problems-when-too-many-objects-on-screen/1863752>\
**Category:** Rendering\
**Tags:** low-fps, unreal-engine, Performance, question\
**Created:** [May 19, 2024, 7:45pm UTC](https://forums.unrealengine.com/t/performance-problems-when-too-many-objects-on-screen/1863752 "2024-05-19T19:45:06Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![BrokenBluescreen](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@BrokenBluescreen](https://forums.unrealengine.com/u/BrokenBluescreen)\
**Post date:** [May 19, 2024, 7:45pm UTC](https://forums.unrealengine.com/t/performance-problems-when-too-many-objects-on-screen/1863752/1 "2024-05-19T19:45:06Z")

</div>

I hope this is the right category for this question

Using UE5.3  
I have a 3d game enviroment

 ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/5/8/6/586966421b833b01281d659fb8e882a434bb3dec.jpeg)

With this building. The game is made for supposedly low end devices.

# Problem:

 ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/d/3/9/d39cb24805a5aeca13c01239e3115833178e198a.jpeg)  
When the player is in a position, where, as here shown in the image, the player looks out of the window into this middle of the building, everything is loaded, causing FPS drops from constant 60 to 20ish.

**First Question/Help**  
If someone would perhaps know a technique or anything relating to performance optimization in such situation or level design whise, I would be very glad for such help, literally anything^^

Have already tried:

- using cubemaps in front of windows(looks bad and also I cant have a million diff cubemaps for all the different angles in the game, and having it update in realtime is too ressource intense)
- Also tried to figure out what exactly causes the lag by using Unreal Insights, though the machine I am testing on doesnt have any performance problems, and the low end devices I am targeting are not able to run unreal engine so

**Second Question/Help**  
Are there other ways of figuring out what causes the bottleneck in such situation?

If I can provide any additional helpful information, please tell me 😃