KDE_Plasma

# Theme Arc KDE + Papirus Icons  - Add repository
sudo zypper ar -f http://download.opensuse.org/repositories/home:/kill_it/openSUSE_Factory/ home:kill_it

# Install packages
sudo zypper in gtk2-metatheme-arc gtk3-metatheme-arc arc-kde-decoration arc-kde-konsole arc-kde-kvantum arc-kde-style papirus-icon-theme papirus-icon-theme-gtk papirus-icon-theme-kde libreoffice-icon-theme-papirus

sudo zypper in kvantum-qt4 kvantum-qt4-32bit kvantum-qt5 kvantum-qt5-32bit kvantum-qt5-manager kvantum-themes

# Create a file: /etc/X11/xorg.conf.d/20-nvidia.conf

# /etc/X11/xorg.conf.d/20-nvidia.conf
#
Section "Device"
        Identifier "Nvidia Card"
        VendorName "NVIDIA Corporation"
        Driver "nvidia"
        Option "NoLogo" "true"
        Option "Stereo" "0"
        Option "metamodes" "nvidia-auto-select +0+0 {ForceCompositionPipeline=On, ForceFullCompositionPipeline=On}"
        Option "AllowIndirectGLXProtocol" "off"
        Option "TripleBuffer" "On"
        Option "DPI" "96 x 96"
        Option "SLI" "Off"
        Option "MultiGPU" "Off"
        Option "BaseMosaic" "off"
EndSection

# Create a directory and put this script inside:

mkdir -p ~/.config/plasma-workspace/env/

sudo tee -a ~/.config/plasma-workspace/env/kwin_env.sh <<-EOF
#!/bin/sh
export KWIN_TRIPLE_BUFFER=1
EOF

# In Settings -> Display and Monitor -> Compositor, change Rendering Backend to OpenGL 3.1 and in Tearing Prevention ("vsync"), select Never.

# Configure kwin to remove Alt + Tab delay:

$ kwriteconfig5 --file ~/.config/kwinrc --group TabBox --key DelayTime 0
$ qdbus-qt5 org.kde.KWin /KWin reconfigure

# Restart plasmashell to solve GUI problems

Alt+F2
kquitapp5 plasmashell && kstart5 plasmashell
Enter

https://www.reddit.com/r/kde/comments/6b6793/how_do_i_hide_window_decorations_of_maximized/?st=j944g6rv&sh=49bae999