Earlier quoted context omitted.
(Hopefully you mean 1x! 0x would be pretty untenable ;-)) How much more experience do they have than you? Do you feel like you learn new things?
Maybe 0.5x? I'm sure I had a negative performance impact on my former team. They would have been faster doing all features by themselves instead of reviewing and correcting my pull requests. New team isn't as good as the other one, but I'm still behind. I've learned quit a lot in the former team, the new team on the other hand.. I've hardly coded anything this year. I work with code, but I don't build stuff. As a res…
If the answer to any of the above is "yes", then you may just need to find another job that better suits your interests and needs in terms of career progression. Software development jobs can vary greatly in terms of being interesting/challenging. Being on a big development team is sometimes not the best option for developers that are just starting out. There's simply not enough room to grow and explore because your work environment is so rigid and pre-determined by others.