Live Reload is slow

| Reporting a bug or issue
| ---------------------------------------------------------------------------------------------

I run the commands from Quick-start:
```
git clone https://github.com/airbnb/react-sketchapp.git
cd react-sketchapp/examples/basic-setup && npm install

npm run render
```
Opened `react-sketchapp/examples/basic-setup/src/my-command.js` and changed Swatch component. A minor change: `{name}` → `{name} hi`.

**Expected behavior:**
When I save the file in the editor, the change appears in the sketch instantly or within reasonable time (less than 10 seconds)

**Observed behavior:**
I was thinking Live Reload did not work at all, but while I googled how to enable Live Reload it finally updated, after 63 seconds:
```
🔧  Built ./my-command.js in 63200ms
```

**How to reproduce:**
See above

**Sketch version:**
Version 63.1 (92452)

60 seconds for live reload. Is it normal? 