Backup jobs being queued because DSSU relocation job

I have the following configuration:

-> DSSU on Master Server X
Final Storage Destination TLD1

->TLD1 on Media Server Y
2 drives
Max streams per drive 8 
Maximum concurrent write drives 2

->Clients schedule/policy
Media multiplexing 8 
Allow multiple data streams No

My issue here is that when a relocation job is running and a client job is triggered, it is being queued  and starts until relocation job finishes. How can I allow that both kind of jobs run simultaneously?

I'll appreciate your suggestions. 

Thanks