Refactoring DAX Query using USERELATIONSHIP

I have written this DAX query but it takes quite a long time to render, is there anyway I can refactor this to return the result on the card visual faster?

postVPP = 
VAR currentMonth = DATE(YEAR(today()), month(today()), 1)
RETURN
COALESCE (
    CALCULATE (
        DIVIDE ( [sumOfVendor], [Total Partners], 0 ),
        USERELATIONSHIP ( 'Channel Table'[partner_key], fact_transaction_monthly[transaction_monthly_partner_key] ),
        fact_transaction_monthly[transaction_monthly_charge_created_date] >= currentMonth
       
    ),
    0