On the plus side I find the colour under LED lamps far better than fluorescent, but the suck it an see approach is really not good enough. I have not worked out why LED lamps with electronic switches flicker to start with, my switches you can hear click, so clearly a relay makes the circuit, but bulbs under 5 watt tend to have a shimmer or flicker, and it seems to be down to bulb size not load, 5 x 2.2W shimmer, 1 x 6W does not.
Guess I must be lucky then, none of mine flicker or I'm not susceptible to it - though I do notice it in car rear lights.