Hi Lisa,
I would recommend to use the latest patch as it fixed alot of bugs and it contains a lot of new features.
SP13 is very old, I'm not sure which patch level of BPC you running on your backend, excel addon SP13 will not be supported once you patch to a higher level in the backend.
we are on SP19 patch 1, it is very fast, you will see a big improvements from SP13.
Andy