Skoda/VW lane assist feels like it would bounce you back and forth between the lane markings if you just let it do it's thing; more useful a backup system to stop you crossing the line when you have a lapse in concentration (which is how they describe it I believe).
Yep, its function is basically: if your child distracts you and you don't pay attention for a few seconds then it'll try preventing you sliding into the other lane. Which is fine.
They have several tiers of it I believe, the best one also offers automatic lane change, like BMW, it was actually working perfectly fine for me, with no back and forth bouncing - it had the annoying <steer a bit or I don't think you are holding the steering wheel> feature (Karoq 2018) - but newer models I think also have capacitive steering wheel, so you can only touch it.