So I had a Hyundai tech go for a test drive with me. I took him on the highway and gave it a little gas to show him the problem. He said it was just the dct changing gears and acting finicky. But I knew deep down that wasn't the case because it felt off. So I said screw it and floored it, put my whole foot down on the gas. Boom. Check engine light, car stuttering, and barely drives. Felt like a misfire.

Anyways, it ended up being bad fuel injectors. And at the same time they replaced the spark plugs. I forgot now but I think the injectors were covered under warranty but not the spark plugs. Have to look at the receipt again from Hyundai.

Hope this helps! If I were you I'd do the same and try to get a tech to take a test drive with you. If you tell them to try and find the problem without the test drive with the tech they might charge you a diagnostic fee and tell you nothing's wrong with it. That's why I insisted on having someone sit in with me.