Lower this if your performance is really bad, but my setup runs the game with this fine. This sets the maximum amount of drawn shadows. Press ctrl+s to save and you're done! In the next section, I'll give more context to what these console commands do. R_portal_stencil_depth 3 //depth of portals, does the same as the Portal 1 setting R_portal_use_dlights 1 //can cause visual glitches (for some odd reason audio as well), disable if game acts weird Better Graphics Quality for Portal 2 // If you have both of the requirements, then I can move onto the actual contents of the guide. With the highest quality graphics on (the one that I'm going to show in this guide), I average around 200, with some peaks at 300, and in some areas I dip below 60, but it's rare (one place I usually dip is the giant underground vault door that leads to old Aperture (mid-game spoiler)). To show how little power it takes to reach 300 often, below is my rig. When you finish the guide, you can change the AA to 8x MSAA with little to no quality loss. You don't have to turn the AA to max when you're done, but to test if you can run the super high settings, I recommend using 16x Q CSAA. A good indicator that you can use this mod is if you (most often or always) reach the Source Engine frame limit, which is 300 FPS on maxed settings (shown below), which doesn't take too much power, but the more often you reach 300, the better. Now, This guide isn't for the weakest of PC's, but it is lighter than you might expect. I don't know what text editor comes with Mac or Linux, but use what comes with the OS, but again you can use what you like, as long you can paste and edit large amounts of text. You can use whatever text editor you prefer though. If you are on Windows, Notepad is all you really need.
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