Recording Playback Wierd Sounds

I use the Yamaha MG10 XU mixer connected to my computer using software mixcraft to record.Its been going fine up intil now I have all the preference setting setting correct on the recording software.,the problem isnt with the recording softare as Ive tried another interface.When I use the steinberg interface through my yamaha mixer to record something produces this awful swirling flanger/phaser sound like its coming from a cave at low volume.Ive tried uninstalling and re installing the steinberg drives but to no evail arrrrrrgh please help me.