Here's the deal: I've recently started practicing 4x4 but I would like to get faster. I'm sub-13 on 3x3 but my 4x4 average is in the low-50s on a good day and I feel like I should be a lot faster at 4x4 than I am. I use Yau of course. Below are the time splits for each step:

F2C: sub-5

First 3 Cross Edges: sub-8

L4C (Half Centers): 8 to 8.5

Last Cross Edge: sub-3

3-2-3 Edges: about 11 (I know a bunch of algs for L2E)

And 3x3 Stage: about 16

My OLL Parity is like sub-3

My PLL Parity is sub-2 (counting the regrip before the alg)

What should I be working on the most? Also, let me know if you want to see me do a couple example solves. Not sure how helpful that would be. Thanks in advance!

F2C: sub-5

First 3 Cross Edges: sub-8

L4C (Half Centers): 8 to 8.5

Last Cross Edge: sub-3

3-2-3 Edges: about 11 (I know a bunch of algs for L2E)

And 3x3 Stage: about 16

My OLL Parity is like sub-3

My PLL Parity is sub-2 (counting the regrip before the alg)

What should I be working on the most? Also, let me know if you want to see me do a couple example solves. Not sure how helpful that would be. Thanks in advance!