thanks for your reply - i'm using https://www.amazon.de/gp/product/B08GR1LWT2?tag=hyperioforum-21&ie=UTF8&psc=1
what's your latency with the pi zero?
(i already lowered the resolution to the minimum of 640x480)
I'll try root asap - thanks
Your grabber seems like a more advanced one, maybe that's why latency is high, I am using an ordinary AV Grabber (Logilink), latency is fine IMO, how do you measure latency anyway?