I certainly noticed a difference in productivity in those first few months, as people began to adapt to working online. When the pandemic hit, only about 10% in my organization were equipped to work from home and already in a telework-type arrangement. It did take some time for the team members to adapt to that and to know how to work virtually within their team environment.
So I would say that I did notice some impact, but the productivity quickly rebounded once people became familiar with using virtual tools and how to work in a virtual team environment.