I found something interesting that will improve the experience in 10149... For these in the US, if you don't need Cortana, set the region to UK. Needs to reboot the phone to download the UK English. I found to be more stable and less buggy.
Times like these I'm glad I have TWO phones and I didn't just throw everything to the dogs and download a technical preview onto both of them like only a gibbon would do. I still have Cortana on my daily driver.