I found the graphics in Helldivers 2 for PS5 a bit... low res in performance mode. Here are the best graphics settings for Helldivers 2 on PS5 to help with the object shimmering and flickering. The game runs at 1080p 60fps in performance mode. In my opinion, these settings help clarify the image after the upscaling has taken place to your display. Resulting in a much better, cleaner image.