sACN all fixtures flashing

Maybe a RDM problem. Try to switch off.

Can you describe the flashing? If you just look at one light, how often do you see flashes? Random/fast, once a second, once a minute?

Very fast flickering, getting brighter when intensity is Up, but can't Turn IT off

Thx

Thx for the Suggestion, i already tried that but No luck 

Yeah we have experienced that with the JB lighting p12.

Under setup - device - protocols - sAcn

Disababel sAcn per address priority, in the lower left corner 

Unfortunately Etc Eos has this option on by default.

Sorry, but if there are problems with priority by channel it is a firmware 'bug' of the fixture.
There are many stupid companies which are not able to read about the basic of the DMX protocol.

Do you see this flickering only when you're changing the intensity or always, even if you let the intensity sit at a value?

When you say you already tried, there might be multiple places to turn it off depending on your setup. What does your signal path look like?

Something like this would help a lot: Nomad (software version?), switch (brand model?), gateway (brand, model?), DMX to the fixture (brand, model?).

The option you mention is in Patch > Protocols, not in setup. The reason why it's on by default is that it will not misbehave with products that correctly implement sACN and DMX according to the respective standards, but does allow additional control with those products that do support it.

Always, they are just strobing away

Thx for the answers, right now the prob disappeared for unknown reasons and i am not able to reproduce ist

Yeah we have experienced that with the JB lighting p12.

Under Patch - Device - Protocols - sAcn

Disababel sAcn per address priority, in the lower left corner 

The reason why it's on by default is that it will not misbehave with products that correctly implement sACN and DMX according to the respective standards, but does allow additional control with those products that do support it.

(Edited my answer based on feedback and removed my biased opinion. Thanks for the input.)