GF 80mm 1.7 lens not sharp??

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Hello all! I recently bought a GFX 50S ii and the first lens I decided to get was the 80mm 1.7. As far as I could tell, everyone is saying how sharp it is. So far, mine is soft at 1.7 but gets better after f2.2. Anyone shed some light on if this is normal?? I'll try and get some samples later on. I just got it today and was taking photos in the parking lot at work to check it out. I bought it used from MPB in "like new" condition. Cosmetically it does appear new though so idk..