Oh do not worry, this questions comes up quiet often.
I actually do not know why there is still the link to the ReShade+Framework in the download section
, it was just an internal joke between developers to see how everyone reacts
Its true, it is only worked on to decrease fps and simulate old school slide show effects which was a special request by many users, other than that there is no real benefit.
If you are still interested, please check out the following two links:
=>FAQ
=>FPS_Comparison
And hope you do not mind these old developer jokes