Anthony.
路This is not the case, mine is working perfectly with watchmaker from day one without any lags or hanging problem.
In watchmaker app, I choose " Wear OS smartwatch" in WATCH selection and not any version of Tag Heuer connected.
The watchmaker was working fine with 2nd gen and also working perfectly with the 3rd generation. Even with the 3rd generation, I am getting good battery life with watchmaker AOD ON compared to 2nd gen. It's last for more than 2 days 馃榾
I'm the same as you..
I don't have a problem with my Gen 3.
Not sure why others are having Issues.
We must just be lucky.