Fizz-lofi-distortion on reverb sends

Some of my reverbs when used as send effects produce a high-end fizz (like white noise blended with the wet signal) in some projects. Relab reverbs, Lunar Lander has it, Seventh heaven does not (in any project) Not a single problem when used in an insert slot.

Any ideas why? Is it a bug?

Have you double checked all the levels involved, especially the send ones ?

Yes :frowning: