It sounds like you're having trouble changing keybinds in SweetFX 2.0. The file you need, ReShade_settings.txt, isn't included in your downloads. To fix this, try downloading the ReShade framework separately. Once you have it, follow the instructions provided to configure the keybinds for basic functions like screenshot, toggle, and reload. If you need further help, consider reaching out to the SweetFX or ReShade community for assistance.
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