RemoteDB validation triggers query

[Bradoskirnirneos]

Hello, i am using OTRS 5.0.15 with remoteDB, each time that i select a value from the list shown on mi remoteDB field triggers ALL the RemoteDB fields.
So, i use my RemoteDB field to a table with +3M entries (with the filter given in the field) and then 5 queries are launched without any kind of filter (one for each remoteDB field i have in the form) making my server cry.
Is there a way to fix it?

[jojo]

set up indexes and get a more performant server.