Graphic Artifacts when using GroupBox/Card in ViewBox

I have a UserControl with a ViewBox inside.
I don't know why but in dark mode, some graphic artifacts appear when I move my mouse over them

https://user-images.githubusercontent.com/54487782/116099068-e36b2380-a6ab-11eb-9093-8e60a94b9d62.mp4

I've tried to fix it with the different solutions listed here : https://github.com/MaterialDesignInXAML/MaterialDesignInXamlToolkit/issues/1097
I've tried :

• UseLayoutRounding="True"
• SnapsToDevicePixels="True"
• RenderOptions.ProcessRenderMode = System.Windows.Interop.RenderMode.SoftwareOnly

Moreover, I've tried to visualize my ViewBox with Snoop, but Height and Width values seem normal.

In light mode I don't have this problem.

- EDIT -
I lowered the brightness of my screen, and I just saw that there are also artifacts in light mode.

Commencez par reproduire les artefacts signalés avec un UserControl contenant un ViewBox et un GroupBox/Card, en comparant les modes sombre et clair ainsi que la vidéo jointe. Examinez les paramètres tentés UseLayoutRounding, SnapsToDevicePixels et de rendu logiciel ; le travail est considéré comme terminé lorsque les artefacts n’apparaissent plus lors du déplacement de la souris ou de la diminution de la luminosité de l’écran.