pTr here!
I've done 18 timed solves today with a mean of 30.36. I think that the people are correct about f2l.
My split for this week
f2l: 16.63825641
Oll: 3.092171429
Pll: 3.998833333
I'm doing 4LLL right now and the biggest thing for my 19.54 solve was 2 free f2l pairs that I quickly saw, then I just watched on a corner while solving each f2l so I could quickly insert while finding the correct edge. Yes, I insert a corner then line up the edge. I also know 16/21 PLL and a handful of the common OLLs.
Advice: How I cut off 10 seconds from my average over the last 2 weeks, was doing slow solves. Plan your cross then close your eyes and do it. Take some time to figure out which of the 4 f2ls is easiest, then do it (can you do it with your eyes closed?). Repeat this till OLL. I would then do OLL and PLL as fast as possible without doing the wrong algs.
Q: Why is eyes closed so Important?
A: When you practice doing cross and f2l with your eyes closed, you train your brain to not need to watch the pieces that are being solved. This means that during a solve you can recognise a f2l then start solving it, and look for the next one at the same time.
p.s. cross sucks... I hate it...