The exit at Division is not a problem.  I have observed traffic flow there for years.  The problem westbound is the two merging entrances at delta one right after the other.  The river ave entrance can slow east bound traffic, but that entrance is lightly used.  No overall it is the volume of traffic that enters beltline at the delta interchange.  East bound traffic starts to slow from the massive influx of traffic from River Road and does not flow smooth again until after delta.