`iced::time::every` does not work well on web

[ISibboI]

Thank you for creating iced_web, it makes it amazingly simple to create a UI that also works in the browser!

I am using a substription to a timer event to drive updates in my application with iced::time::every with an interval of ~0.016 seconds. On desktop, that works without issues and my framerate measurement shows the targeted 60fps with only minor deviations.

On web though, this seems to work rather badly. I usually get some 4fps, sometimes it jumps to 20 or 40, and sometimes it hangs for a few seconds.

Note that the same application worked totally smoothly both on web and desktop when I used an "update loop" before, i.e. I let the update method return an update event. Then the framerate was not limited though and I got some 160fps on web, being a bit wasteful. Therefore, it would be nice if the timed events would be more accurate on web.

Is this an issue of iced_web, or of some of the underlying crates/mechanisms in the browser?