Slow-downs with the context menu and thumbnails and icons not updating

I'm constantly getting slow-downs with the context menu. And thumbnails and icons not updating. Also I have continuous files that get stuck while syncing, and I have to close and re-open dropbox. Is there a need to release versions every two days that are buggy? Can you please add an option to avoid auto-updating? Some of us have companies, and zero time to deal with constant bugs, please.