Hi,
the crash/reloads means the memory need is too high.
A text-hotspot can also need a lot of memory. Internally every hotspot textfield will be converted to an image/texture and depending on the size and resolution (
oversampling) a hotspot can need a noticeable amount of memory.
You could try adding renderer="css3d" to these hotspots, then the browser is rendering these textfields by its own by using CSS-3D-transforms.
Best regards,
Klaus