V13
Fire Sell Tank
Haha yup. Saw several videos where the user couldn't get the split screen function to do anything properly. Good ol' Samsung.
Touchwiz and memory management are and always have been the problem.
TW is much better than what it was but it still get sluggish after a while. Samsung really need to take a book from google , oneplus and motorala page and learn how to program a proper UI. The hardware is top notch and top of the line so there is no excuse for the UI to start lagging after a while.
Start from scratch for the S9 i say and try to stay closer to the stock android experience.