Can Anyone Help Me Out?

[Fluent]

Hello all, I have an issue regarding Pokemon Uranium. I began to play the game, but when I encountered my first wild Pokemon my game started to lag like crazy. Outside of battles the game also slightly lags when I run and occasionally during text. I am on a Mac and have tried to fix the issue using the extraction of the rgssad file method, but it will not work because I cannot drag/move any files to the extractor or move around any files in the actual game file. Anybody who has an alternative fixing method or found a way around having to drag the files into the extractor, please let me know asap, it would be greatly appreciated. This is an amazing game, but I cannot enjoy it when I cannot fight a battle that will last over 5 minutes when the opponent has 1 Pokemon. Not to mention that just one Poke ball takes around a full minute to complete shaking and either catch or have the Pokemon escape from the ball.