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Below are a couple of things you can try to reduce duplicates caused by a multi-value field. Results will vary depending on your particular view.

1. Use aggregation

Under "Other" in Advanced options, enable Use aggregation.

Locate the offending field under "Sort criteria". Click on Aggregration settings, then select Aggregation type: Maximum.

2. Filter by delta

Under "Filter criteria", add the delta equivalent of your multi-value field; e.g. if your field is "field_artist_bio", there should be another field available called "field_artist_bio:delta". 

Add the field. Set Operator: is equal to, Value: 0.