I run Slack all day, signed into and switching among 4 accounts. Plus Apple's Messages. Plus chrome and safari, each with at least 6 windows open and dozens of

I run Slack all day, signed into and switching among 4 accounts. Plus Apple's Messages. Plus chrome and safari, each with at least 6 windows open and dozens of tabs among them. And I then have at least 2 instances of VSCode open, each with dozens of tabs. I never experience the slightest perceptible speed or performance problem. This is on a late 2015 MBP with 16GB RAM. On my prior machine, with the same daily behavior, I still never experienced performance problems in VSCode. I used to use ST2 & ST3. Bought both. I just don't find a compelling case for it given the huge and active extension community for VSCode. Slack, however, frequently has performance problems. I also don't open files regularly that exceed 4-digit line counts.