I agree with Keith, you need to get comfortable in the bottom position. Although 5-6 seconds may be a little long. Sets of 3-4 holding for 2-4 seconds would do just fine. Two exercises you want to focus on: Overhead Squats
and Snatch Balance
It also looks like there might be some shoulder mobility issues along with hips and maybe T-Spine. Weightlifting is the 2nd most flexible Olympic sport so not a lot of people are just going to be that flexible naturally. Be patient and keep working your mobility exercises into your training.