Incredibly sorry to hear you are having the same/similar issue, but I'm sorry to say that misery apparently does love company, because this has been an absolute nightmare to troubleshoot.
HP Spectre x360 Convertible 15-bl112dx
Windows 10 Professional (x64) Build 16299.334 (1709)
i7-8550U, 16GB DDR4-2400, 512GB SK hynix NVMe disk
Intel UHD Graphics 620 (driver version: 22.20.16.4815 9/26/2017)
nVidia MX150 (driver version: 23.21.13.9101 2/23/2018)
Had the machine less than a month, tried all the various suggestions related to adjusting the power settings for WiFi, thought perhaps things had gotten a bit better, but obviously that has not resolved things. Will try adjusting my Intel graphics drivers and report back. It's to the point where i can't even use the machine, because the mouse will stutter and freeze for multiple seconds over and over and over. I'm getting close to trading this thing in for a Lenovo or Dell XPS 15. My apologies for venting my frustrations here. It's a lovely little device, but if i can't perform basic functions while working remotely I might as well be using pencil and paper.
Thanks to all who have contributed insight to this (far too common) issue.