Creating a route on computer and transferring to device

I can create a route manually on the explore website and then transfer the route to the GPS 66i device, however, the route is usually truncated and the points along the trail all point back to a central location (it is not an accurate representation of what was created on the explore website). I am not sure what I am doing wrong. 

This also occurs when I tried to upload GPX routes from websites like hiking project/alltrails - truly frustrating.

I have kept the waypoints below 50. Still has the same problem.