That doesn't sound at all like what I've been experiencing on Windows 10 TP. I've found it remarkably stable - it's now my main OS on my gaming rig and I use it daily. Outside of the occasional game incompatibility (usually fixed by patches for recent games), it's been the most stable version of Windows I've used in a long time.
TP is the more polished version. Weekly builds are worse, but I think that's to be expected and I wouldn't be worried.
Only weird thing is the browser - I haven't seen a version that could be considered even beta-ready. No way they are going to release something better than IE in just two months.
