Can Kubuntu 26.10 ACTUALLY Beat Windows 11 in 4K Gaming?

Kubuntu 26.10 is currently in beta, which means it’s time to see how Canonical’s latest Plasma spin actually holds up under real fire. In this benchmark showdown, we’re putting Kubuntu 26.10 head-to-head against Fedora, CachyOS, and Windows 11 to see where Linux gaming stands right now on modern high-end hardware. All tests are conducted on an NVIDIA GeForce RTX 5080 using the 610 driver branch across both Linux and Windows 11 to keep driver parity as clean as possible. Every title is pushed at native 4K with maximum graphical presets and DLSS set to Performance mode to balance raw raster and modern scaling overhead. Test System & Settings GPU: NVIDIA GeForce RTX 5080 Driver: NVIDIA 610 Series (Parity across Linux & Windows) Resolution: 3840x2160 (4K) Presets: Max / Ultra Settings Upscaling: DLSS Performance Games Tested Kingdom Come: Deliverance II Marvel Rivals Resident Evil Requiem RuneScape: Dragonwilds #LinuxGaming #Kubuntu #RTX5080 #PCGaming #Benchmark #Windows11 #CachyOS #Fedora