Wireless Dex lags with 2021 TV

I hope someone here can help me because i didn’t get any help in the member app and i didn’t get any help in the Dex forum in Reddit.

Connecting my Not 20 Ultra to my 2021 AU8000 TV wirelessly has considerable lag. According to samsung website, Samsung TVs made on or above 2019 should have minimum to no lag. I connected my phone to a 2020 samsung frame TV and notice that there is almost no lag! What could be the issue?