Here is the information regarding Ryujinx precompiled shaders in plain text.
%appdata%\Ryujinx\bis\user\save\00000000\00000001\ ryujinx precompiled shaders
(You can paste this into File Explorer's address bar to go directly there.) ryujinx precompiled shaders
The shader cache is stored in the following folder by default: ryujinx precompiled shaders