GPU Screen Recorder has been released in version 6.1.6 on Flathub.

The tool records screen content using the GPU and works similarly to NVIDIA ShadowPlay on Windows, with support for X11 and Wayland on AMD, Intel and NVIDIA hardware.

The new version brings a systray in the new UI, X11 HDR support, support for DisplayLink monitors and allows running on all GPU vendors.

• Allow all GPU vendors to run. Vendors others than AMD, Intel and NVIDIA are untested
• Workaround KDE Plasma bug that crashes the systray every 5 seconds and properly remove deprecated systemd service
• Implement a systray in the new UI that shows recording status as well
• Support X11 HDR (my Xorg server fork) along with per-monitor framebuffer
• Add support for DisplayLink monitors with monitor capture
• Only put games into game-named folders, everything else goes to a folder called “Desktop”
• Add per-frame hdr metadata

Source: Flathub