Ok, so maybe I should start with a proper oil catch can breathing into air and see how it works, if that won't help, then it's piston rings for sure :/
But what about valve seals, can't they be faulty/worn?
P.S it would be great if someone had a link to a proper/best catch can setup for N/A vq35de with breather setup
Oh and mileage is just under 83k miles... But engine was swapped, because genuine engine was first twin turbo in our country which was broken aparts... But previous owner said that this engine is from a lower mileage car and was auto...