Luckily it's your backup phone
I had the same experience with my surface 3.... I ended up doing a total factory restore back to 8.1, then all the updates, then windows 10 production, then back on insider.... it seems ok now after all that.
Also my Surface 3 did not like insider even before this buggy build. I bought it on Win 10 went to insider became too glitchy and wiped and restart on the Production builds.