I have noticed this as well on one of my systems.. the screen grows very well, but also catches a TON of detritus. So much than when I wait a week and take the screen out to clean the first minute of running water over it like mud coming off the screen. I know this isn't an answer that people want to hear, but I have found rinsing (not cleaning the algae off) the screen every 1-2 days really helps with the growth.
I also had some issues with the 'screw in' LED bulbs I bought, but I found out (using a real spectrometer at work) that the spectrum is not even close to ideal for photosynthesis (620-630nm reds, but were listed as 660nm). $70 worth of screw in LED bulbs wasted, $20 of DIY parts to make my own with known good LEDs fixed the growth issues. It should be a crime to market bulbs as something they are not, ie, 'Grow Bulbs', if they don't contain the proper spectrum for photosynthesis. Unfortunately it seems a large majority of the sellers are doing just that, passing off junk to customers.