I'm not going to get into whether Andor was slower or not, but I think the reason Ahsoka's pacing doesn't feel good is that it's a show which very much set out its path right from the start.
- Ezra and Thrawn are in a distant, unknown location.
- Ahsoka wants to track them down to end the threat of Thrawn, Sabine wants to track them down to rescue Ezra, Morgan and co want to track them down and bring back Thrawn to reinvigorate the remnants of the Empire.
- There is a MapGuffin that will point the way, so the race is on to claim and decipher it.
So, right from the start, the bits we knew about were the locating Ezra and Thrawn, the going to find them and the bringing them back. That was the baseline. What would be interesting, then, was what happened next, what would be the fallout of that foregone conclusion?
And in the end, while the journey was interesting in parts, what we ended up getting was purely the foregone conclusion and nothing further. The "what happens next" that we were waiting for so eagerly remains to maybe be seen in some future product whose likely release date or even production date remains a mystery.