Any users with laggy ? Is it smooth enough to update?
With the Dual processor, it seems both Series 1 and Series 2 owners are reporting no issues with lag.
It's laggy on my AW even if reduce motion is turned on.
Try a hard reset by pulling down the digital crown and power button, this might resolve if there was a glitch.
Will Apple force me to update to the latest OS if i do this?
No. The Apple Watch update will only be applied when you permit it.