Are the handles and knobs supposed to be chrome or rough/brushed metal?
The legacy raytraced image is showing pin sharp reflections (roughness of 0) while the Lumen image appears to have a higher - but still low - roughness (maybe like 0.1). If both images are using the same roughness map, there should not be a noticeable difference between them.
Here are two images of metals with a roughness of 0.15, one has legacy RT on, the other has Lumen on… can you tell which is which?
Any raytracing on rough metallic surfaces is going to look worse that smooth, lumen or not. Here is an image of a 0 roughness metal with Lumen, looking sufficiently metallic.
Once you start to increase the roughness of raytraced metal, things get a little unstable and fuzzy - especially in motion.
Your project settings look fine. That’s about all I can say without actually inspecting the assets itself - Lumen should generally look exactly like the legacy RT, except with proper GI contribution.
Oh, and the 1st image was Lumen, 2nd was RT.