performance de consulta

Pessoal tenho essa consulta abaixo que esta carregada porque tem uma subconsulta no join que esta pesando demais. Gostaria, se possível, de sugestões para melhorá-la.
No caso preciso pegar a data da 1ª compra do cliente.

O problema esta nessa subconsulta:

" (select fc.codcfo,min(tm.dataemissao)as data1compra from tmov tm WITH (NOLOCK)
inner join fcfo fc (NOLOCK) on (tm.codcfo = fc.codcfo)


where codtmv in('2.2.01','2.2.29','2.2.14','2.2.25','2.2.02')

group by fc.codcfo)t1"


Campo: data1compra


SELECT tm.STATUS,tm.CODTDO,tm.NUMEROMOV, FCFO.NOME,FCFO.CODCFO, tm.DATAEMISSAO, tm.valorliquido, FCFO.USUARIOCRIACAO,tm.VALORDESC,tm.VALORDESP,tm.STATUS,
(SELECT NOME FROM FCFODEF INNER JOIN TCPG ON (TCPG.CODCPG = FCFODEF.CODCPG) WHERE CODCFO = FCFO.CODCFO) AS PRAZO,
data1compra,
SUM(case when tprd.margembrutalucro >= 1.15 and tprd.margembrutalucro <= 1.30 then (titmmov.precounitario*titmmov.quantidade) *
case when tm.codven1 = '0003' then 0.02 else 0.01 end
when tprd.margembrutalucro >= 1.31 and tprd.margembrutalucro <= 1.50 then (titmmov.precounitario*titmmov.quantidade) *
case when tm.codven1 = '0003' then 0.022 else 0.012 end
when TPRD.MARGEMBRUTALUCRO = 1.51 then (titmmov.precounitario*titmmov.quantidade) * 0.1
else 0 end) as valorlucro
,case when tm.codven1 is null then fd.CODVEN else tm.codven1 end as codven1
FROM
(select fc.codcfo,min(tm.dataemissao)as data1compra from tmov tm WITH (NOLOCK)
inner join fcfo fc (NOLOCK) on (tm.codcfo = fc.codcfo)


where codtmv in('2.2.01','2.2.29','2.2.14','2.2.25','2.2.02')

group by fc.codcfo)t1
inner join tmov tm (NOLOCK) on (tm.codcfo = t1.codcfo)
INNER JOIN FCFO (NOLOCK) ON (FCFO.CODCFO = tm.CODCFO)
left join FCFODEF fd on (fd.CODCFO = FCFO.CODCFO)
INNER JOIN TITMMOV (NOLOCK) ON (TITMMOV.IDMOV = tm.IDMOV)
INNER JOIN TPRD (NOLOCK) ON (TPRD.IDPRD = TITMMOV.IDPRD)
LEFT JOIN TMOVCOMPL (NOLOCK) ON (TMOVCOMPL.IDMOV = tm.IDMOV)
left join DNFEINUT d (NOLOCK) on (d.NUMDOC = tm.NUMEROMOV)


LEFT JOIN VAREJAOCEREAIS.DBO.CONTROLELICIT CLICIT (NOLOCK) ON (CODLICITACAO = NUMLICITcao collate database_default)

WHERE tm.DATAEMISSAO>='20/10/2013'
AND tm.DATAEMISSAO<='20/11/2013'

AND tm.STATUS <> 'C' AND tm.CODCFO = FCFO.CODCFO


and codtmv in('2.2.01','2.2.29','2.2.14','2.2.25','2.2.02')

AND tm.codcfo not in('000337') and FCFO.CODCFO <> '000337'



and d.NUMDOC is null

GROUP BY tm.CODTDO,NUMEROMOV, NOME,FCFO.CODCFO, tm.DATAEMISSAO,
tm.valorliquido, FCFO.USUARIOCRIACAO,tm.VALORDESC,tm.VALORDESP,tm.STATUS,
data1compra,
tm.codven1,fd.codven
,CLICIT.FUNCIONARIO

ORDER BY tm.dataemissao