Hey there @Gastouuu! Could we take a look at your material and your reflection capture’s settings? It looks like that material has some roughness, if you’re going for a chrome-like look, you’ll have to lower the roughness in the material itself. If this is a 0 roughness high metallic material, it could be indicative of other issues.
Hrm, it’s odd that had any affect, but I’m glad you have got to a solution! However I’d like to point out a couple of things just for your record. One being, the material you’re looking at is Brushed Steel, which is supposed to be blurry like this:
since you’re looking at a material instance and not the material itself, that roughness may not be pure roughness in the actual master material the material instance derives. You can test this by making a new material, then set metallic to 1 then roughness to 0, and you’ll end up with a chrome like surface. That said, if it’s working for you now, I can’t knock results!