Slow query hash match

I have a query that is running very slow the execution plan tells me it is spending a lot of time on a hash match. What can I do to make it faster?select
COUNT(DISTINCT p.personnelID)FROM directivegroup g
left join dbo.PersonnelGroup dgpon g.AgyGroupID_FK = dgp.AgyGroupID_FK
inner join #TempPersonGroup pon p.personnelID = dgp.PersonnelID_FK
OR p.personnelID = g.PersonnelID_FK-- from #TempPersonGroup pg
-- inner join directivegroup dg
-- on dg.AgyGroupID_FK = pg.AgyGroupID
-- OR dg.PersonnelID_FK = pg.PersonnelIDinner join testresult tron tr.PersonnelID_FK = p.PersonnelID
where tr.passed =1AND tr.AgencyID_FK = @AgencyID
and g.directiveID_FK = d.directiveIDAND
tr.directiveID_FK = d.directiveID