How can I set exec wire fade out time?

hi

my exec wire doesn’t “light up and fade out” anymore, like it did before.
it instantly gets back to its initial position, so when it’s an exec path only used once it is so fast I don’t see anything, no visual cue the exec path went through.

I cannot see the exec path unless I have a function where the exec path “stays” such as a loop containing a delay, or a repetitive exec path sich as a tick based event.

but I’m 100% sure the exec path goes through, I can verify with a print or a breakdown.

so my question : where can I reset the exec path wires"fade out" time to its initial state ?

NB : it happens in my main blueprint too, it’s not a debug filter issue

thanks in advance