Windows doesnt leave you a lot of change from 8GB these days.

I used to have issues as Firefox would open a tab, cap out my available memory and 3cx would start stuttering causing voice issues.

The solution was to move to a carbon with 32GB RAM, but like, I should probably expect more out of Windows/Slack/3CX/Firefox in the first place. Feeding the beast more RAM is no longer a financially viable alternative for a lot of people.