Does not recommend this product
When I first added on this extension, it worked great. I like to have on average at least 30 tabs open. My memory usage went from around 6-7 GB to about 2.7 or 2.9. Recently somethin has changed, and it hasn't been saving hardly any on memory. So I did a test this morning. With TGS turned on (and most of my tabs suspended), it only reduced my memory usage to about 6 GB. With the extension completely removed and all tabs enabled, my memory usage was about 6.7 GB. This does not offer enough benefit to be worth it. Until the undo whatever they did to break it (Or possibly Chrome broke it, because they don't like outside competition) I won't be using it any longer.