Yes one of the teams uses Gerrit.
They are completely stuck.
Developers are sensing this tool as a impediment to deliver code and participate in the building of the software.
It has happened that there is always only one person that is reviewing code: the least experienced one! Gerrit Code reviews are just toys for children , there is no improvement in the code, people is afraid to work with it .
This small team also needs a person dedicated 50% of her time to fixing Gerrit , its installation and its environment.
As a temporary solution we have allowed that the most expert developer makes formal code reviews by passing Gerrit.