While using XWayland apps with NVIDIA PRIME Render Offload causes noticable tearings on apps. It happens both Vulkan and OpenGL. Mostly noticed while gaming. In GNOME Wayland session problem appears, in Weston sometimes screen tears sometimes not. In 520 drivers, offloading graphics don’t cause tearing.
My computer was a Muxless design Laptop manufactured by ASUS. It has GTX 950M GPU and Intel’s i5-6200u CPU. GNOME Wayland session ran with Intel’s iGPU and games offloaded with NVIDIA GPU. Tested with XWayland 22.1.8, GNOME 43.3.