-transform:scale causing 'blinking' when hovering

I am working on a catalog which uses css -transform attribute to scale each 'swatch' upon hovering.

Here's my problem: In some browsers and on certain sites, when you hover over the swatches, it causes the page to 'blink' as your roll over them. I cannot nail the problem down either, on one site it may be unique to Safari, on another it may only happen in Chrome, on another it's perfectly fine.

Wish I had more information, but maybe someone else has run into a similar problem.

.swatch {
  -webkit-box-shadow: #EFEFEF 2px 2px 0px;
  -webkit-transform: scale(1);
  -webkit-transition-duration: 0.2s;
  border: 1px solid white;
  position: relative;
  z-index: 1;

.swatch:hover {
  position:relative;
  z-index:10;
  transition-duration: 0.2s;
  transform:scale(1.8);
  -webkit-transition-duration: 0.2s;
  -webkit-transform:scale(1.8);
}

It also seems that the problem is remedied when removing any z-index attributes, but then the hover swatch is behind the other swatches; which does not work for this project.

Any thoughts are appreciated.

I've had success adding

-webkit-backface-visibility: hidden;

to the offending element (.swatch in your case).

However, test it in older versions of Chrome and Safari to make sure it doesn't break anything else. In my experience, Safari 4 specifically isn't a big fan.