For 140 columns and 800K rows you would need to have at least 8GB of RAM to load.
It’s not strange or surprising. We just don’t have such R&D budget as Microsoft do Version 4.0 of EasyMorph will have improved compression that will make it possible to load 2-3 times more data, or use 2-3 times less RAM for the same data volume. This will be on par with in-memory engines such as PowerPivot or Qlik.
Meanwhile, if you need to work with large or wide tables – install more RAM. We recommend having at least 8-16GB of RAM. On the positive side, RAM is cheap nowadays.