After 2 weeks of perfect performance, after last nights show one of my windows with WS2811 strips started flickering (looked like twinkle). We were having windy evening with cold front. Turned off power till this evening, but it's still there. It has a about 8 inches of wire from P2 controller (ground and data only). Power leads go to each of two strips. I noticed that handling the data wire seemed to stop it. Made a new wire to connect with. Still the same. I thought it might be some noise, so I tried wrapping foil around the data wire. As long as I touch the foil with my body, it stops, and immediately starts again when I let go. The windows are on a covered porch, and the strips are attached with small pieces of duct tape to the alum window frame. It's being caused in the first strip, as it happens even when the second strip is disconnected. Any suggestions?