Github For Windows used to be as important to my workflow as my code editor. I absolutely loved the "click to select which lines to commit" feature, and I'm pretty sure it improved the quality of my commits drastically. And it was constantly improving.
A few weeks ago came a new version that changed everything. Previous updates used to be incremental, but this one seemed to replace everything at once. Overall the UI was still good, even though important parts became hidden behind tabs. But the performance... Oh god the performance. Syncing repos became a multi-minute operation. Listing commits went from instantaneous to taking several seconds. It became so unusable I switched back to Linux for development.