Install ReShade for the game or app you want to use
Launch the game or app
Press the ReShade toggle key, usually Home
If Home does not work, check the keybinds in the ReShade overlay
Open the ReShade overlay from the in-game menu if available
Make sure ReShade is properly installed in the game’s main executable folder
Verify that the correct DirectX/OpenGL/Vulkan version was selected during installation