fernandel Blender in ports is an older version than that posted on Blender's web site. The current version from Blender works on FreeBSD just fine, including Cycles, but you need to build it yourself. There are instructions on how to do that for FreeBSD11 on Blender's site. It takes a long time compiling on a slow machine but, the last time I did it, it wasn't bad on an i7 workstation with lots of memory.
You don't want to use Blender on a slow machine anyway.
You don't want to use Blender on a slow machine anyway.