Bad Performance URP

Hi,

I'm currently working on a Third Person Survival Game. But on an almost empty scene with just my Player (from the Third Person Starter Assets) i only get around 250-300 FPS. I'm using the latest Version off URP and I have set the lowest Quality on all URP Renderer and I have no Reflections and no Realtime Shadows...

Then I was looking at the Profiler and The only thing that takes up Performance is the RenderPipelineManager.DoRenderLoop_Internal() :

What can I do to fix this? btw. I have a GTX 1050TI and an Intel Core I5 with 8gb of ram and I'm using Unity 2020.3.25f1

And please don't tell me that I should just lower my Lighting Settings or reduce Draw Calls...

Thanks