Woocommerce Blurry Thumbnails

I'm looking for someone who can work on this project ASAP. This is a custome built Woocommerce website which is created using Porto Wordpress template. Porto has a feature which allows creating the "Individual Product" page layout using Visual Composer. The actuall product pictures are sharp and in good quality but the thumbnails in "Individual Product" page and the thumbnails on category pages are bllury! I'm lookig for someone who is very familiar with Woocommerce and can change the setting or add styling to avoid blurry thumbnails. The existing thumbnails can be regenerated using a third party plugin.
If you are answering to this project, you should be able to start by tomorro or Sunday. We need to go live by next week.