I wasn't planning on reporting every Windows 10 Insider build, but I actually have something to say about this one. The last couple of builds were examples of Microsoft switching to a faster release cycle for preview users, although the known issues list were quite benign. The semi-frequent upgrade cycles would shake users away from the Insider program, or transition to Slow.
They now seem ready to start rolling back to less QA for Fast users.
Five issues are known about build 11102. First, internal changes to the Windows Graphics architecture cause some games to crash on launch, full screen, or resolution changes. The Witcher 3, Fallout 4, Tomb Raider, Assassin's Creed, and Metal Gear Solid V are known to be affected by this bug, but other games (and maybe even other software) could be affected too. Second, screen readers and other accessibility software may crash randomly. If you require those accommodations, then this build could make your device functionally unusable to you.
Beyond those two, big issues, three other ones are present. There is an error message on login with a workaround, a breaking change for old wireless drivers that you should probably upgrade beforehand if you rely upon wireless to download drivers, and “The Connect button does not show up in Action Center.”
Microsoft is currently updating the deep insides of the OS, which means that they will be poking around the source code in weird places. Once it's completed, this should make Windows more maintainable, especially for multiple types of hardware. But again, if you're not wanting to be a part of this, switch to Slow or leave Insider.