Bad quality/splotchy reflections

Development Rendering
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1

Hello,
I am using Lumen to get reflections, but they are very bad quality and with a lot of “splotches”. In post process volumen changed the quality settings does nothing and Ray lighting mode set to Hit lighting for reflections it does not clean the splotchy surface. Any ideas of what I am missing here?

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thank you

2

ok, just found that increasing the Lumen Scene Lighting Quality in the GI tab of the PPV does the job, but not to an usable level