output flickering

Hi

When I run the sdfrender on my  nvidia-1050-maxq laptop, it is basically ok but I can notice some flickering on certain positions (see attachment . e.g upper right ).   Is this sort of accuracy issue?

https://user-images.githubusercontent.com/2059536/169684366-648a750c-e17a-461d-88d7-91a036d28bd2.mp4


