What you are referring to are the window decorations.

Apart from Linux Mint, Firefox almost always uses client-side decorations. What you are showing here is still client-side.

It is just that Mozilla recently enabled vertical tabs option for everyone, so the top bar is now slightly smaller than before. You can disable vertical tabs easily by searching in the settings.

Love how Remedy’s game styles is right up my alley. I really hope somewhat niche nature of these games does not deter their success.

Are you using Gnome? (Workstation)

Also, though unrelated to your issue, DXVK_FRAME_RATE only works with DXVK (DirectX 11). RDR2 will use VKD3D (DirectX 12) or Vulkan natively.

Some devices provide a hardware level interface for it. It is the case for my ThinkPad T14s and the limiting persists even when changing operating systems.

Some other devices don’t, and the limiting only works while the OS is running. That’s how my previous laptop from ASUS was.

I am using OBS Game Capture plugin and it works perfectly on Wayland. I have yet try it with Wine Wayland, though.