Typically, this is because copying is a resource-intensive process.

Sometimes Windows freezes up during the copying process when you try to copy a large number of files in Windows. Dealing with Windows Freezing During Copying While the built-in compression tool in Windows works well enough for text files, it doesn’t always offer optimal compression for images and videos. It takes a few minutes to compress your files, leaving you with one large file which copies very quickly. This can work when moving many small files by archiving them with WinRAR or 7zip for better compression ratio. FF Copy (free, but isn’t updated often).

Fast Copy (ideal for creating backups and free).If TeraCopy doesn’t work well enough, you can also try: TeraCopy also intelligently skips problematic files so you can review them later without terminating the entire transfer. It also does asynchronous copying, which accelerates file transfers between two hard drives. It has a nice interface, integrates with Windows, and is actively updated. What’s more, the app verifies the files to ensure they’re fully identical and even alerts you if you make a mistake when moving files just so you’re sure of the action.

Fast copy software for mac