[Dylan16807]

Integers will improve your range somewhat, but not that much. If you set 2^16 to be a meter, then you still can't go past 65km. And as a downside now you have to be extra careful your derived numbers don't go out of range.

[veltas]

If you set the unit to 1mm you can reach like 20% of the way to Proxima Centauri with Sol as origin.

[Dylan16807]

That's 64 bit. If you were using 64 bit floats you didn't have problems in the first place.

Also a granularity of 1mm will make slow movement complicated to calculate correctly. Consider updating at 60Hz and having an object that moves 1 inch per second.