Incredibly high resource usage

Development Getting Started & Setup
,
1

Ive just installed the latest (release verion) of unreal engine 5. Im having huge problems with resource usage. When I activate the program, it takes a heck of a long time just to load (creating shading, several thousand !)
this is consuming as much as 80%-90% of my system resources. When it finally does load up, it can consume 80%-100% of my resources. Surely this cant be right ?? If it is, then I just cant use it ! I have a pretty high spec PC

windows 11 64bit
64GB RAM
6TB SSD strorage
Intel i9-7920X processor @2.90GHz (12 cores)
NVIDIA GeForce GTX 1060 6GB

is there anything that can be done to reduce resource usage ?

** I have no idea what version tags mean, so Ive picked the first one in the list

2

The first time you open the project, you will wait for many shaders to compile. This will always take an age, no matter what machine you have.

After the first time, the project should open normally.

3

ok, thanks for the reply. Its still using an extrordinarily high percentage of resources though, even when its open and Im working on the project it can be 80%-100%, this really isnt sustainable over large periods of time, it could end up damaging my machine

4

It could well be just because you’re using UE5.

You can turn off Nanite, Lumen and virtual shadow maps. That should do it…

5

I want to use UE5, is there a known issue with resources for this ?

6

Not sure if related, but I recall that my utilization dropped a lot after I setup visual studio 2022 to use with UE5. Here is a very good setup video.

7

5 uses a lot more resources than 4. Even in just the example level.

8

To Be honest, if its gonna use this level of resources, its unusable in my opinion

9

Turn off lumen, virtual shadow maps, and nanite, and it will run like 4.

10

isnt that defeating the point ? I wanted to use all the features of 5.

11

I’m having the same issue, but seems to be on every launch that it’s compiling around 8000 shaders then when the project opens it has to “prepare” another 8000 odd shaders.

I’m running an i9-9900k, 32GB RAM, RTX 2080S and it’s running off an SSD. It would seem it’s UE5 specific as I never had problems launching projects on UE4.27 quickly.

12

You have no choice but let the engine build it’s cache of shaders. Once the editor is finally done, it’s going to be usable just like UE4 editor.