I, too, have a similar problem, with MI Pro 64 with Discover Bundle sometimes goes very slowly and often hangs with (not responding) message. I am nearly always using images as background (geophysical rasters or sometimes grids), but I thought that this should be OK? I am using a brand new HP with Win 10, 16 GB RAM, Intel I7 core, 3.4Ghz, all of which I would have thought more than adequate to run Mapinfo. I was having the same problems with my laptop running the 32-bit version, but with half the RAM and slower CPU and on Windows 7, which is why I "upgraded" to my current desktop PC. When it does hang and I lose patience after a few minutes and exit the program, it sends a message to Microsoft, surely it would be better sending a message to Mapinfo!