Small Aircraft
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 11.5
Distraction; Confusion; Situational Awareness
ATC Issue All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Equipment / Tooling; Human Factors; Procedure; Staffing
HOOD and NEWBERG were combined and it was a busy period.  NEWBERG should have been split off and I was told afterward that we didn't have the staffing.  We have a tendency at P80 to save on the overtime budget and not call when we are below the numbers allowed.  Aircraft X was executing a procedure turn at OZIER for an approach into MMV.   Aircraft Y was descended to 3;200 feet for the visual approach and changed his mind at the last second and wanted an RNAV approach.  With a CL60 retuning to Hillsboro and the complexity of traffic; and most of all the late and poor updates that FUSION allows us; it was hard to efficiently stay on top of this situation.  I don`t know for sure; but I believe the two aircraft involved were within 3 miles of each other.  I might have had divergence but it's hard to tell with FUSION.When we are short staffed; OT must be called.  I know the manager frowns on this but safety should come first.  FUSION should be optional.  I would have had a better target display on the PDX site.  Tracking is more consistent.
P80 controller describes possible loss of separation and advises FUSION radar as not giving adequate updates as it should.