Yeah, pretty much that, this was expected, it's as similar thing as with the outriggers on 42009, the engine strains, and what power there is gets lost in parts flexing.
Now to get round this, they need to start doubling up on structural parts, start introducing metal axles and gears, or at least a material that does not flex whithout breaking, and produce a more powerfull motor (or have 2 work alongside eachother).....not sure all that is finacially viable for one set a year.
Still buying this thing as soon as I can find one.
(wich is proving difficult, the usual local online retailers won't let me pre order since they don't know how many they will actually have on launch (if any), and shops don't have them yet, and can't guarantee they will have them by launch day, same for the Claas, launch of 2H technic seems to be a ripe old clusterfuck again.....)
/firstworldproblem.