(I've been reading this forum for quite a while now picking up tips here and there from quite a few people).
My question is how do you actually improve on your overall speed when it comes to cleaning the windows quicker using WFP method 
Do you cheat on windows like bathrooms (translucent glass) like the traditional window cleaners practise??
Do you cheat on the frames ??
Do you increase your flow of water ??
Do you replace 2mm jets with 3mm jets ??
Do you just rinse only (no scrubbing) if the windows look fine ??
I am constantly getting faster all the time but still looking for tips so if anyone has a good tip would you please mind sharing it on this forum ??
On obscure glass, I tend to just do a quick brushing without really rinsing off (except for first cleans).
I save time on first cleans these days. I go around them twice anyway as it does a better job that way IMO. So, on the first pass, I do one face of the building, then the next face etc for tops and bottoms. It doesn't matter if it is still dripping because the second pass can be done all tops then all bottoms anyway (less hose movement on first pass so saves time.
Ignoring what I've written above for a moment, on many jobs it's possible to save on hose movement if you plan in advance. e.g. You may start at the front (tops first), work around to the back, then when you get to the back there may be a conservatory and/or some lower windows that don't have any windows above them. Do the top ones first that are above other windows then do the conservatory and windows that are not below other windows. By the time you've done that you can do the other lower windows at the back as the dripping has stopped or eased sufficiently. You then work around to the front again on the lower windows (hope you followed that). Of course there are a number of permutations depending on house and windows layout.
If there is a bit of flat roof where I need my ladder, I usually do that after tops but before bottoms as there will be a bit of time while I'm on the roof when the dripping slows down etc etc. Again this saves moving the hose back to where I started.
I feel that a faster flow rate helps me work more quickly (up to a point) though this has to be balanced with leaving water lying around - especially if there is a danger of freezing.