Shopify Marketplace Connect

This app is completely useless, truly not usable. Codisto was great, it worked well, this new Marketplace Connect will not work with anyone who has more than a handful of products to list. I cannot even filter our listings, the data is so slow to load after 2 minutes (timed) about 10% of one filter option was loaded for our 5,000 live ebay product listings. After 3+ years with Codiso, I am now in a rush to move to a new platform that we can actually use. Super disappointed.