Performance is extremely slow, browser is freezing, why?

[hoogw]

I add 200 labels, browser seems freezing, I click reload button, refresh button on browser menu, it reload after 10 seconds.
obviously 200 labels make browser not responsive.

any advise?

[hoogw]

i know why is slow, 200 marker with lable generate 200 overlay views,

to make it fast, how can i make 200 lable share only one overlay view?

[hoogw]

if i draw 200 lines, i can draw 200 line in one polyline, fast

if i draw 200 line use 200 new polyline object, it will be slow

[hoogw]

what is the zIndex means?

                       `  var new_marker_label = new MarkerWithLabel({

                              icon: " ",  // an empty string will hide the icon, only shows labels   
                              
                              position: ___position,

                              clickable: false,  // must set false, otherwise, can not use mouse to pan map, due to this marker label shade, only trigger marker click-drag event, pan map event will not trigger
                              draggable: false,  // must set false, otherwise, can not use mouse to pan map, due to this marker label shade, only trigger marker click-drag event, pan map event will not trigger

                              zIndex: 0,   // does not help, we want to all label in one single overlay view, instead of each label for a seperate overlay view.
                                           // all label in a single over lay view, should have best performance, each label in a seperate overlay view will slow down performance 

                              map: map,

                              labelContent: "<div style='font-size:" + ___zoomScale[current_zoom] +  "px'>" + ____text + "</div>", // can also be HTMLElement

                              //labelAnchor: new google.maps.Point(-90, -45),   // make sure label at center of marker, must set anchor as offset,  
                              labelAnchor: new google.maps.Point(label_anchor_offset_vertical_y, label_anchor_offset_horizontal_x), 

                              labelClass: "labels", // the CSS class for the label
                              labelStyle: { opacity: ___opacity },  // opacity is NOT working, instead, you can set opacity statically in labelClass: "labels", // the CSS class for the label, color: rgba(0,0,0,0.5);  /*  label text color  */
                              visable: false

                          })`

[hoogw]

I createa 200 label with 200 new_marker_label = new MarkerWithLabel({.....})

I believe this will create 200 labels with 200 seperated overlay view.

That result in very low performance.

I decide to set zIndex to a fixed number, such as 999.

try to make 200 label use single overlay view, to speed up performance, however, it is same result, very slow.

[Nicola-Widmer]

We are having an similar issue with about 80 labels at the exact same position. It loops through all labels stacking the next on top which causes 80 * 80 action calls. The whole process takes about 5 seconds to complete which causes a flickering of the markers.