You are doing mobility work, however, are not seeing much improvement.
Taking another look at the situation can help. Taking a systems approach with the 4 systems in this episode.
Pro Episode # 21 – Pro-User Request Friday: Not Seeing The Change? You Need a Systems Approach.

Are you taking a look at daily movement patterns and technique with skills?
You need to be using the tissue &taking it to end range.

Have you voodoo wrapped your quads/hamstrings?
A couple to check out.
Pro Episode # 36 – Voodoo Floss Series # 3: The High Hamstring
Sunday, July 2nd, 2017 – Voodoo Quad Smash
Sunday August 6th, 2017- Hip Flexion

Take a look at squat therapy to work on your squat technique.
You can use a box as high as necessary to maintain correct mechanics and to maintain an arch.
As things improve lower the height of box used.
Identify elements you are able to do in pain free ranges and create a workout.

Completing the 14 day challenge 7 green lights will give you end range of the most functional positions your body should be able to get into. Changing things up can be a good thing.