One of my biggest issues.
95% of my route is on a busy street that's 4, 5 & 6 lanes at different points. When on a 2 lane side, I feel safer and stay to the right. The buzzing is inconsistent. I can go a week with no problems, but then there's a day like yesterday when I got buzzed 3 times in a minute or 2.
When there are 3 lanes, I tend to take more of the lane as they are a bit slimmer and unshareable. I'll sometimes hop onto the sidewalk in these situations depending on traffic.