Weird. Mine's been rock solid. You sound like you should get yours checked out at an Apple store.Love its speed and screen (13", 2018) but the touch bar is such a liability. I have had more lockups with this system than any Mac i've owned. Mostly seems that the Touch Bar becomes unresponsive, and then i have to hard reboot. I've been using Macs exclusively since 2000, and this is by far the least reliable computer. Crashes about once every 2 weeks.
Technically your 2018 MBP will not run cooler, regardless of what Intel releasesI'm happy with my 15" MBP. I wish it ran a little cooler, but that will come once Intel finally goes to 10nm CPUs.