We have Magento 1.9.1x and looking at Rocket Web Google Shopping Feed Extension. Anyone have experience with this extension? Looking at this extension to help with automation of creating feeds and feed updates in Merchant Center shopping. How did it handle your catalog size? Did you notice performance issue/slow site when using?
I've had a good experience with this extension. There are a couple of others that are perfectly good as well. I'd recommend checking our the Magento marketplace and look for the reviews.