There is a beta renderer for the google maps API
https://developers.google.com/maps/documentation/javascript/beta-renderer

With the beta renderer, the react markers behave very strangely when zooming in. Best I can tell, this is for two reasons:

1. The new renderer uses fractional zoom levels during the zoom animation. But map.getZoom() doesn't return the fractional zoom. Instead, it's reflected in the projection, and factored into methods like .fromLatLngToDivPixel().

2. The new renderer calls OverlayView's .draw() method on every frame of the animation. But it seems like this library draws its markers at some other point in time — not during .draw().

For an example of how OverlayView is properly used to draw markers, see https://developers.google.com/maps/documentation/javascript/examples/overlay-popup