UE5 poor performance after buying new PC

[BRNWSHR]

Hello fellow developers,

Just made a new computer with a beefy config :

Asus ROG STRIX X670E-E AM5
Ryzen 7950X3D
32GB DDR5 6000MHz
Nvidia RTX 2080 (upgrading for a 4080 Super in few weeks)
W11 Pro

I reinstalled my softwares, made some test to check everything is ok with my new PC. It seems fine, in the range for performance with these types of equipments.

But when I launch a new project in UE5 I have maximum 24 FPS. I checked for lumen, nanite etc. Checked everything I could imagine causing any problems with it, but nothing worked.

I have especially made this computer for development, and now I can’t even develop anymore. It’s totally laggy, even in a blank project.

But this is the only software causing problems right now.
Do you have any idea what could be the problem ??

Thank you for your time !

[Roy_Wierer.Seda145]

check if power settings (energy / performance) on the OS are maxed, all drivers are installed and if the GPU is used or if it’s using the onboard one. Games play fine? Tried UE 4.27? BIOS settings alright?

[BRNWSHR]

Thanks for the answer and for your time Roy!

All drivers updated, double checked that. My onboard GPU is deactivated on BIOS so it shouldn’t be possible that UE5 use it.

I have the latest bios available (1805)

My power settings are already set to maxout performances. Games are running smoothly, synthetic benchmarks too.

I’m gonna try UE4.27 I let you know !

[BRNWSHR]

Thanks for having make me try to install UE4 because since then, everything works like a charm. Maybe there were some dependencies missing during my UE5.3 install because as soon as I installed UE4 it was running perfectly.

Weird no?

Anyway ! Hope it won’t come back after the next update or anything like this.

Cya !