Blazor server sending 500 upates per second

index.razor

@page "/"
Tics per second: <input type="range" min="1" max="500" @bind="@CurrentValue" class="slider" id="myRange"> @CurrentValue
<br/><br/>
<div style="width:500px; height:10px; background-color: blue; position: relative;">
    <div class="ball" style="@position_txt"></div>
</div>
<br/><br/>
<span>@DateTime.Now.ToString("HH:mm:ss")</span>
<span>Number of renders: @nRenders.ToString("N0")</span>
<br/><br/>
<button type="button" @onclick="start">start</button>
<style>
    .ball {
        width: 30px; height: 30px;
        top: -10px;
        position: absolute;
        background-color: blue;
    }
</style>
@code
{
    Int64 nRenders = 0, v = 1, position = 10, CurrentValue = 10;
    string position_txt => $"left: {position}px;";
    private static System.Timers.Timer aTimer = new System.Timers.Timer();
    protected void start()
    {
        move();
        aTimer.Elapsed += (source, e) => move();
        aTimer.AutoReset = true;
        aTimer.Enabled = !aTimer.Enabled;
    }
    protected void move()
    {
        aTimer.Interval = 1000.0/CurrentValue;
        position = (position+v);
        if (position>500 || position<0) v *= -1;
        InvokeAsync(StateHasChanged);
    }
    protected override void OnAfterRender(bool firstRender) => nRenders++;
}