JetBrains tools tend to be heavy
Right now, I'm using Webstorm with the Golang plugin on a 2012 13" MacBook Pro with 16GB RAM. What's so heavy about Jetbrains tools? For me, it's quite a bit more responsive than VisualStudio 2015 on a 2016 Dell Laptop with 16GB RAM and a much newer processor. (Both laptops have SATA3 SSDs.)