SharePoint runs slow when loading from folder

So I am trying to connect to the sharepoint folder to access data, but the refresh is really slow once I apply all the steps. First there are 70000 rows/files that load from my sharepoint. When I search by the text filter in the folder path column it takes 2minutes 30 seconds to run, then I use promoted headers and changed types which takes 4 minutes to run, The steps below these three just takes seconds to run which includes removing blank rows. 

Not sure how to handle this, to make this run faster quite new to using sharepoint folder as I had been using a web connector before but want to switch over to the proper way of getting the data using a sharepoint folder.

p.s. the text filter uses the equals option and the exact file path which filters down the rows to just 1 row not sure if this is the problem.