Sorry to hear you have had a tough time downloading the files from Egnyte.
There are multiple factors that decide the speed at which the files will be downloaded and how long will it take for the files to be downloaded. I suggest you go via the support team to get assistance. They should be able to gather the right information and also engage the necessary resources to get this sorted for you.
PS. Help others find answers by selecting "Accept as Solution" if a post answers your question."