Switching to HDR usually helps (if you aren't already) Other than that, it's a decoding/encoding issue that they haven't fixed (yet?).
I have my HDR turned on. I'm also facing some light bleeding issue and can't find any solution to that either.
Maybe instead of Default - High Settings you could make your own settings and up the irradiance value a bit? Because I'm also seeing a general splotchiness.
Hi! We are aware of this issue and we have bug report in our database already. I don't have the solution yet - it is likely some precision or quantization in the realtime GI lighting.
I'm finding setting Irradiance Budget and Irradiance Quality in the middle of the slider and not pushing Precompute Resolution beyond 5 helps "patchiness" issues.
I find pushing Precompute Resolution to 8, 10, 15 causes more "patchiness" even with Irradiance Budget and Irradiance Quality in the middle of the slider...Could be related to the bug? FWIW.