Hello, i would like some help. My configuration is Raspberry Pi 3 B+ with WS2801 connected to the DI to BCM10 and the CI to the BCM 11. The power supply is a 10A one. I tried with an Arduino Nano and with a 74HCT125 level shifter too. The cables are 20 cm long. The effects are working great. The problem is When the USB capture is enabled. If some part of the screen goes dark there is some random flickering which eventually turns off (after 3-4 seconds) if that part remains dark. On the live view i cannot see any flickering on the leds. Thank you for your time looking into this issue.