Bkpf bseg performance

Hello gurus,

I am using bseg,bsid,bsad,bkpf table in customer ledger without any inner join only using simple select statemnet , but my report get very slow whenever it get to collect data from bkpf.

Please guide me how to improve the performance , is LDB is the better option .

if yes , the n how i will be overlap my selection screen over ldb screen.

Please guide me .

Points will be surely awarded.

Priya.