Twitter web-API seems to have a limit which you should even be able to see via browser.
An old note of mine in our code will also tell this:
Code:
/* 2016-11-30: Seems like twitter limits their website to a max "load more" calls of 40. */
40 would mean 40 times loading content by scrolling down.
As said - you can simply test this via browser.
I'am not doing this right now as I don't have the time for that (today).
-psp-