The worst "upgrade" Ive ever seen

This is not trivial to me. I have built a communications network for my small business based on the quality of the old google voice and the new version is so bad I sometimes cant even place a call with it! It is painfully slow--like it takes minutes, not seconds to switch tabs. I am having trouble responding to clients as a result. This is the worst development I have ever seen in a Google product and its causing me head aches. I feel trapped. Unhappy.

Gggggreenivated about Google Voice, v2.5