I am about to quit using mega, I am currently looking at alternatives. Initially I fond the syncing brilliant, although it takes ages to complete the first sync, sometimes days if it is a large folder. One first sync is over new or updated files in the sync are upload almost instantly. My big problems are when I lost a few discs which affected two syncs, for one of syncs I was able to recover the data from the disc except for a few files, the other I could not. I recreated folders on a new machine and configured folders to sync with the mega folders, I expected the mega syncs to restore missing files. Both syncs reported that there were pending downloads, 10 in one case and 29000 in other but neither ever completed. With mega browser interface you can select a folder to download. The folder file download did not seem to do anything, the download folder as zip file also had issues. Initially the folder I wanted to download was 4.5gb and when attempting to download it warned you that it would create a zip64 file but then did not appear did show it was doing something on by showing a percentage complete on tab heading, after 6 hour it had reached 17% and then stopped. I realised there was a sub folder that I no longer required a deleted this sub folder from the mega backup. The brought the size of backup down to 3.95gb when I then tried to download folder as a zip it did not give me message regarding zip64 but surprised me to start downloading the zip file. It did take 2 hours to complete the download. Normally I would expect to download a 4gb file in under an hour. If you ever want to recover a really large sync folder, I would suspect you would find it almost impossible. The 10 files in other sync I could identify and download individually. I have only used free version, I do not know if things are better if you pay but I am looking for something better.
The free version gives you 50gb for a few weeks then you must pay otherwise files are deleted.You can only download 1 gb then you must wait 6 hours before trying again. It will pause between sessions. It does not support Firefox and insists on installing megasyc desktop if you use ff. the chrome add on does nothing. Basically it looks good until you want to download or share files then it costs. 2b1af7f3a8