Map performance is nightmarishly bad on my 2017 15" MBP. Dragging the map ranges from completely unusable in Safari 14 to janky as shit in Firefox 82 to mediocr

Map performance is nightmarishly bad on my 2017 15" MBP. Dragging the map ranges from completely unusable in Safari 14 to janky as shit in Firefox 82 to mediocre but at least functional in Chrome 86. The log is filled with CORS violations and requests to example.com. This is not good.