It's possibly due to the higher CBD & CBN content, the anti-anxiety cannabinoids. Different cannabinoids have some opposite effects, so the high can vary a lot depending on the balance of the different cannabinoids.
Hash & oil are often made from the leaves rather than bud, or import hash is often indica strains, which both might mean higher CBD/CBN, or maybe some THC degraded to CBN in production or storage. So it'll have a different cannabinoid profile to bud. High THC without the other cannabinoids can cause unpleasant anxiety. It'll be dependent on the genetics of the bud too, maybe you can find a more relaxing strain & get a different effect from bud. Some types of fresh hash or oil from certain plants might make you antisocial too.