What? The link says that you can install it from flathub (https://flathub.org/en/apps/com.dec05eba.gpu_screen_recorder) so you just have to click install and then record. Since its in flathub its also available in many distros "app store"
I was using an AppImage
OBS is great, it was my go to recording tool. But my videos were choppy until I started using GPU screen recorder.
i already have snaps why do i need this flat thing?