Afterimage of shadow in deferred rendering

[porifera_no121]

I have a skeletal mesh placed and animated in a third person template project on UE 5.1.1 .

When rendering by Movie Render Queue, if I set the spatial sampling count more than 1, I see shadow afterimages on the body.

It is as if the shadows from a few frames ago are burned in.

MRQ output:

(spatial sample:8, temporal cont:1)

It is even easier to find when Lightning Only is used.

Why do I see these shadows?

Setting spatial sampling count to 1 and increasing temporal sampling count would solve this.

(spatial sample:1, temporal cont:8)

But it would make a blur effect and break Cloth Simulation. So I would like to avoid this.

I am looking for a solution.

The procedure to obtain these images is as follows:

procedure

1. create a new project from Third Person Template.

2. turn on MRQ Plugin.

3. place a skeletal mesh SKM_QuinnSimple and a camera actor.

4. rotate DirectionalLight and set SkyLight Intensity 3.0 to reduce brightness.
   

   

5. create LevelSequence and bind a camera cut.

6. add job to MRQ.

7. set AA setting
   spatial sample count :8
   temporal sample count :1
   AA method :None

8. set cvar
   ((“r.MotionBlur.Amount”, 0.000000),(“r.MotionBlur.Max”, 0.000000),(“r.MotionBlur.Scale”, 0.000000),(“r.MotionBlurQuality”, 0.000000),(“r.MotionBlurSeparable”, 0.000000),(“r.DefaultFeature.MotionBlur”, 0.000000))

9. render