Hello there,
1. Actually our quick doesn’t include variations, did you make any changes here?
2. Load time may depend on a lot of things and we can’t help you while we don’t see your web-site.
3. At the moment only one attribute may be presented on the product grid. But we are going to make this option also for each product. So you may set color for one product and flavor for another. Will it be good for you?