No problem that is what this community is for 
@Jeremy_Spencer super Job !!
Summer nights !!!
I got timing issues with the parallel outputs with FastLED 3.1.8.
@Robin_Gerritsen ,I had to add null pixels to my setup as the first led on each strip did strange things.
How many parallel outputs are you using?
I am using 5 parallel outputs
And yes, all the first leds are blinking as wellā¦
@Jeremy_Spencer how do I do that?
@Robin_Gerritsen , donāt bother, with 8 or less strips use this port insteadā¦
https://plus.google.com/107582712342018613958/posts/D52GAC8B5P5
@Yves_BAZIN @Sam_Guyer do you know if this 16 pin parallel output code was merged in Samās ESP32 branch?
I know teensy 3.1 supports 16 pin output, but honestly I have to many problems with that chip and the latest tools for it. The upload hangs for 30 seconds if I use serial output, the serial output itself dies (just silently stops outputting) after a random number of lines if I use FastLED, and other non fun stuff.
Oh, and of course, it still overs 0 debugging while ESP32 at least offers some kind of traceback, which is better than nothing.
@Marc_MERLIN Iām hoping to have my latest ESP32 support merged into the main FastLED branch soon. In the meantime, you can use my fork. It supports any number of strips, but only 8 go in parallel at any given time.
@Sam_Guyer parallel strips are actually a pain to wire (more cables, cross talk between them), so parallel is only useful if I can get them to update at the same time.
So it sounds that for now I can only get 8 in parallel with your code, and if I want 16, Iām stuck going back to teensy, which Iād rather avoid, but if itās the only way to get 16, so be it.
Thanks for your answer.