I also have a Jarvis. The largest model (180x80cm), I don't even think they make them this large anymore. No wobbliness. My monitor is on an adjustable arm, so

I also have a Jarvis. The largest model (180x80cm), I don't even think they make them this large anymore. No wobbliness. My monitor is on an adjustable arm, so if I forcibly jolt the desk I can see the monitor wobbling a little but otherwise it's just fine.