Bug Project lags when upgrading to Unity 2021.3 (URP)

I upgraded from 2020.3.3f1 to 2021.3.3f1 because i needed the vertex id feauture in the shader graph. In 2020, the project ran 60 fps smooth on mobile. Now it runs at no more than 45 fps, even when using the exact same project, without changing anything else. I don't know what to do, i tried optimising, turning off shadows, using the lowest possible settings in the urp general settings and barely has any effect. Lowering the rendering quality does help performance but at a cost. The profile shows it's the rendering where the problem is. Please fix, i'm going back to the old version and trying to find a workaround.

 

The shaders seem slower in general, as well as the camera depth option in the urp global settings

 

I can offer the project to a unity employee if you think it helps

 

I found the main problem, it's the depth texture. It didn't lag in 2020. Is post processing turned on by default when depth is enabled? It feels like so