Alternative for a filter formula
Since the formula works, adjusting the search range should help to reduce the formula load. Try :
=FILTER(tab1!L1:L6000,tab1!K1:K6000="US")
Please share if it works/not.
Since the formula works, adjusting the search range should help to reduce the formula load. Try :
=FILTER(tab1!L1:L6000,tab1!K1:K6000="US")
Please share if it works/not.