Scaleable Render Texture Resolution at Runtime(AKA making your game look pixelated)

Pixelated game screens for your retro-esque games are cool! The future is now to make your games look worse! It would be even cooler if the player could choose the resolution while they play, or it changes during gameplay! 

The usual disclaimer: I am not a programmer, I am what I optimistically call a ‘functionality coder’.

Step 1: Have the camera output set to your render texture

Step 3: In the render texture, make sure Dynamic Scaling is set to true. Any render texture flagged with this setting will be affected by ScalableBufferManager.ResizeBuffers.

--- This was the point where things weren't working as expected. There were no changes to the resolution of the render texture at runtime. Below is what allowed it to work for me ---

Step 4:  Go to Edit -> Project Settings -> Player. Uncheck 'Auto Graphics API for Windows' (or whatever platforms are being used). Add 'Direct3D12' from the dropdown. Drag it so it is the first item in the list.

That's all.