how tall are you? Assuming you are using 45# plates on that bar, you look to be well over 6 ft. This becomes a factor because your knees seem to "get in the way".
Your style of DL emphasises the leg drive. Nothing wrong with that,but your numbers will be limited. For max #s, most DLer end up with a DL form which is between the style you show, and a stiff legged DL form. This hybrid style puts more emphasis on your glutes, and low back (which you use to stabilze your spine against the increased shearing force on your spine because your back angle is lower - maybe 30 degrees instead of 45 degree incline).
If you're over 6' 3", you may want to try pulling your DLs off blocks that are 3-4" thick.