Check the images. The details from HDRI sky and geometry are lost when using raytracing SSR. The issue only occurs with coat materials, if coat was set to 0 the details would re-appear. Compared vs rasterizer and path tracer.

Reproduction:
1) Open the project and enable the path tracer
2) Notice the geometry and HDRI details visible in the car reflection
3) Enable Raytracing
4) Notice reflection becomes blurry

Expected result: With most SSR settings set to high values and denoiser set to off. The reflection would more closely match path traced result, reflections would not be blurry.
Actual result: Reflections are blurry, details are lost.