Mirror reflections getting blury when rendering an animation

[maciej_janikowski]

Hi,
I am trying to render out a simple animation of a bathroom.
The reflections in the mirror looks ok at the beginning of the animation but the more frames are being rendered the blurier the mirror reflections get.
I do not have any motion blur activated and can not figure out a solution to this problem.
When I turn off "reduce flickering" the problem no longer persists but other problems arise - the animation flickers and is unusable. Your help is needed and greatly appreciated.

[maciej_janikowski]

Here frame 40

[npg]

Try using Preferences->Render Defaults->Optix Legacy Mode.

[Luma3d]

What's your the setting for your reflection bounces? I usually bump up mine to the max setting.

[maciej_janikowski]

Thank You npg - this worked!

[maciej_janikowski]

Hi Luma3d. I have experimented with the bounces but it did not resolve the issue. Problem was with the denoiser and switching to the Legacy mode solved the issue. Thanks for your response.