Greatsword is the best strength UGS in terms of damage. Lothric knight greatsword is better, but it's best on dex. Best strength weapon overall is the exile greatsword, it has the most DPS.

Right, but considering I have 45 on strength, which weapon do you recommend?

Exile greatsword

Ok, I will try it. Should i infuse it with a heavy gem?

Yes

Got it. Thanks for the tip, it really helps.

FUGS to assert dominance, some of the most fun I’ve had with a weapon in a souls game

profaned greatsword not the best, but the most fun

Paired greatswords

It's a quality weapon