All in all quite happy with this Linux setup on my Razer Blade Stealth after a week of actual work on it. What is really offputting are the small things: Suddenly BT stops working and only a reboot fixes it. Wifi becomes unreliable for 10 Minutes (and recovers) without me doing anything weird. The screen blanks out for two seconds randomly a couple of days.
I wonder if XPS13 Linux people experience similar things or if thsi is really just this machine.
@halfbyte sounds like issues with the power saving. AFAIK the linux power saving for laptops is primarily based on ThinkPad notebooks. And even there, these glitches occur. AFAIR you have to exclude these parts from the power saving profile, sometimes even to go so far as to disable the hardware-based power cycles.