Hi, my website is pretty slow so I did a speed test with GTMetrix. The results came back and the top issue is "Specify a cache validator", for which I got 0 out of 100! GTMetrix says that the problem is "The following resources are missing a cache validator. Resources that do not specify a cache validator cannot be refreshed efficiently. Specify a Last-Modified or ETag header to enable cache validation for the following resources:" Is it possible to optimize this at all with Wix? Thanks.