Why is jQuery UI accordion open/close animation so choppy?

Question

I've been trying to figure this one out and I just can't see any issues - as well, the same accordion (same jqueryui version 1.9.2) works with no issues on another site, I even switched the theme to use the same one as the other site and I still get the choppiness on this one.

And it shouldn't be the jquery ui theme either as it's working fine here

Any ideas what it might be?

Answer 1

For future readers, I have also experienced this issue when I hadn't wrapped the content of my accordion row in a div tag:

Bad:

        <div class="accordion">
            <h3>Delivery Address</h3>
            <table class="address">
                <tr><td>...</td></tr>
            </table>
        </div>

Good:

        <div class="accordion">
            <h3>Delivery Address</h3>
            <div>
                <table class="address">
                    <tr><td>...</td></tr>
                </table>
            </div>
        </div>