Large Performance Regression in UE5 (CPU Performance)

Tested the shipping builds of 5.2 and 5.3 versions of my project, it’s very surprising that 5.2 version has double the fps of the 5.3 version
The performance difference is even more than running inside the editor
Lumen, Nanite and Temporal Super are turned off for the same project and tested on both RTX 3050 laptop and RTX 4070 desktop
I don’t understand what’s been changed by 5.3, if the trend is going on the new UE5 games would require NASA computers to play
I could upload screenshots as proof later but it takes hours to cook my current project and I deleted the last 5.3 build of my project
What’s the performance of the recent 5.4 version I’ve not tested it with my project