Some leds are late?

and... no progress my man.
I strongly believe now it has to b a raspberry fault

Don't really understand why it's behave like this.
Nothing been changed, as i mentioned i made a fresh install on hyperion and no progress what so ever.
When picture is bright all seems to b ok, with darker pictures - lottery.
Did even check voltage on both ends of my led strip - all good.

Dear Lighting-guy77 I'd like to thank You for all help provided last night.
For all your time and effort! Hyperion behaves a way better now, but isn't perfect yet.
I was playing with diffrent gpio's pins and I can confirm now what no 18 is dead. Will organize another RPI 4 to confirm my diagnosis that something is wrong with Raspberry.

Once again - T H A N K Y O U ‼️