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IEEE 1394 Legacy problem + Driver

Hi guys i'm having a problem with my RME Fireface 400.  It is having crackling sounds and stuttering. I read about putting the IEEE 1394 on the (Legacy) one but in the list i dont have that version. I can only choose from: 1394 OHCI Compliant Host Controller (old version)
             Texas Instruments 1394 Compliant Host Controller. But none of them improve the situation. Does somebody know if i can download the 1394(legacy) somewhere or where i can update the IEEE 1394 driver?