When I boot my KDE Linux I use my archlinux kapsule container daily to run google-chrome-beta (hardware accelerated with nvidia and with sound).
I documented that here: Kde-linux: how to: google-chrome-beta in kapsule container: hardware accelerated and with sound
I never had speed issues with installing packages in a kapsule container (images kapsule:archlinux and images:ubuntu/24.04).