If the kink you're referring to is the amount of time Qwen's "thinking" about your greeting, that's not necessarily actually a problem. I've seen common misconceptions about exactly this kind of scenario.

Models like these are trained to follow instructions. When they receive a user input they think "what is the user asking me to do, and how do I go about doing it?"

If all you've said is "Hi", that leaves them with a huge puzzle and no hints how to solve it. What does the user want them to do? Is this a test? Did they start writing an actual instruction and accidentally hit enter partway through? Do they want me to write a "hello world" app, and if so in what language? Is this the outout of a "hello world" app that I wrote in a previous round that I now need to check up on?

Qwen's models are known to be rather "thinky" in the first place - it's part of how they're able to hit so high above their weight class - so it's not surprising that it's taking its time to figure out this challenge you've presented it with.