Browser – Redirect
If you have a lot of redirects on your site then it can be very painful to the performance of your site as the browser needs to request them one by one. Plumbr is taking redirects time into account and if it exceeds given threshold then exposes Redirect Root Cause with an full URL where redirect was ended.
In general the rule is to avoid redirects as much as possible, they can drastically decrease page loading especially considering mobile devices. When possible try to make only single redirect.