Intel Core i7-8700 @ 3.2GHz (12 threads, Coffee Lake)
64 GB 2666MHz DDR4 RAM (4x Kingston KHX2666C16/16G)
SAMSUNG MZVLB512HAJQ 512GB NVMe PCIe SSD
GPU is just the built-in UHD Graphics 630
Opening a new window takes presents a blank, black window that has more and more UI glitch in over a 2 second period. This is very frustrating for as a file-open delay when doing quick small edits. Gedit, on the other hand, does it in the time it takes to make the "fwoosh" opening animation (which can supposedly be disabled for faster start).
And for the record, there are no specs bad enough that a text editor should have a noticeable delay to open.
The only time vs code got unbearable to use for me was on this iMac late 2013 with an HDD drive I got on Craigslist a month ago but once I upgraded to SSD it was like a whole new computer, even running VMs and Kubernetes, VScode runs real nice working on large scale enterprise apps.
But yeah your computer sounds strong enough to handle any IDE so specs not the problem.