Sublime is buggy when using poorly built (my assumption) plugins that are required to be productive.
I gave Sublime years of my fulltime attention, many, many hours of use, debugging and testing. It's not a "hype train" decision for me when VScode worked properly out of the gate, and I got no bugs (besides one syntax highlight issue recently fixed...) slowing me down.
Performance wise, Sublime opens faster, but after all the plugins I needed, it sometimes seized the entire interface up for seconds at a time, or during scrolling. This was rare, but it did happen.
Opening quickly doesn't matter if you open it's once a day. But consistent minor bugs grinds the motivation right out of you.
Edit: Sublime started an editor revolution, and it's great, but it's not perfect for everyone.