Problem with custom tuning

[hasibo]

Hello and good day. 

I have a question, I have downloaded around 20 Dream theater songs where alot of them have a custom tuning which forces my bass to tune to a REALLY low tune where the strings just bounce and stuff. I searched in what the Song was tuned in the database and tuned my bass that way, but it didnt help. I have simply no idea whatsoever to do at this moment

[Alex360]

I think those is BEAD 5 string tuning, so you need 5 string bass to play it freely w\o tuning to that spaghetti-string-state

or you may want to buy heavy tension strings
I'm still not happy with this compromise, I may freakout when I tune to E std with this heavy-thick strings, or bow my neck one day even with double trussrod I have >_>