Pause a bit more at the bottom. It’s debatable though because I do see a pause at the bottom. A good way to test is to try pausing for one second more and see if you find the second rep and beyond harder. If so, then you’ve eliminated more of the stretch reflex (good thing if your goal is to improve your deadlift).
For the bench, I am hesitating giving you too much advice, since I messed up my shoulders on them when I was younger, so I am hardly the expert. But I just read an article that may help you decide on your optimal width: Bench Press Grip: The Magic Number