Updating multiple markers every second causes lag based on number of markers.

**Describe the bug**
So I have a usecase where the user can see a bunch of other user's live locations which keeps on updating every second. The issue is that when I have more than (n) users like 100, the maps page starts lagging with updates. I was able to recreate this in a barebones flutter app as well using the package. Looking at the debugger performance logs I can see that `update#map` is getting called in parallel multiple times.
**To Reproduce**
Steps to reproduce the behavior:
Make a recursive update map function that updates the annotations every seconds with different lattitue and longitude.

**Expected behavior**
A clear and concise description of what you expected to happen.

**Screenshots**
This screenshot is an initial screenshot when first few markers are updated.

This is after few more updates. There were almost 50+ calls to update#map.

**Smartphone (please complete the following information):**
- Device: Iphone 15
- Version 17

**flutter doctor**
Please add the `flutter doctor` output.