File too large to be opened

Hello, 

I downloaded a set of wireframes called "Praxent-Wireframe-Design-System-Open-Source".

It's a Sketch file of just 24Mb. Open it, was a total delirium, it took so much time, that load a game on Commodore 64 using a cassette would been faster. 

Once opened it was impossible to work on it as well copy/paste or drag the elements in my main file where I am supposed to work, because simply Adobe Xd was so much slow that I do not have enough words -_-

So I removed the content that I didn't need thinking in this way to reduce the file size and save a new file. 
I did it, and the new file  was saved, this time an Xd file, resulted in 100Mb instead of less than 24Mb O_O.
It didn't bother me as for the kind of PC I have, 100Mb are neither comparable to a tickle. 

I was wrong, open it was the delirium move the elements, delirium as well, without taking in consideration the crashes that happened during this whole operation. Now 2 hours are gone and still I can't do anything. 

How is even possible that a cloud application can not manage a misarable file of 100Mb and neither 24Mb? O_o