Spanning Sync not syncing everything

[Kyle]

I have a TV Broadcast schedule that I am trying to sync and I am
having some odd issues. 1st off I understand that this is a lot of
data, there is an event on every hour of every day. Most of these
events recur every week. I have had to make multiple attempts at
syncing. Sometimes some of the data goes through and sometimes it
just times out. The most successful attempt I had it synced everything
except for anything 7pm-8pm every day of the week. I have had success
uploading an ical file directly to Google Calendar (it takes forever,
but it at least works). My question is, am I trying to send too much
for Spanning Sync to be dependable? Should this work regardless of
how many events I have?