Good smooth curved surfaces for export

The max may not be correct approach. This plugin allows you to calculate based on desired error. The formula is simple so, I just use quick hand cal.
You friends program may not be fully compliant to dae schema. If possible posting your model allows others see what they get and changing you export options may help.
IE like the two sided face option
I have yet to convert to 2016 ( My bad:( ) save you model as 2015 if possible