Quite acceptable conditions, that's only at the speed of the Internet at 10 Mb / s is not very fast. I think this is not enough for rendering.
Leonardo is not all about mining. They have a tie up with Gigawatt so basically anyone can choose mining directly without being a part of LEOS.
The main theme for them is rendering, they aims to be the fastest, simplest, and most affordable cloudbased rendering solution on the planet.
I also came to know that the mining process won't affect the rendering as they already have a script which will close the mining software when the rendering jobs comes in.