Extreme loss of performance on version 4.27

Community Community & Industry Discussion
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1

Hello.

I’ve been working on a project for a while that was made in engine version 4.24.
After I was done with this project, I moved on to the next one. And this time I downloaded the latest version of ue4, which is 4.27.2. And I noticed a MASSIVE performance loss compared to 4.24.

4.24 has 120 FPS in a new project.

4.24
4.241920×1077 78.3 KB

4.27 has ~70 FPS in a new project.

4.27
4.271920×1077 78.7 KB

I couldn’t determine what or why exactly is responsible for that performance loss. It’s not static meshes or lighting. Nor it is a postprocessing.
I’ve experimented, and noticed that if I delete a certain number of objects (not only meshes, just random stuff) on the scene, at some point FPS instantly jumps to 120. But when I ctrl+z the last deleted object it drops back to ~70.
However, if I return everything back and then delete just this object, it does nothing to FPS again.

What may be causing this performance loss?

2

So… based on complete lack of replies… no one else experiences this issue?
Is it just me? Very weird… And unfortunate. :\

3

Maybe try running the profiler on each version and see where the culprit is?

4

I use 4.22.3 - Excellent performance for Quest 2 using OpenGLES2 as well as PC using forward shading.