Dropbox also can’t sync folders that are flagged for copyright violations, DMCA violations, or malware.Learn how to give Dropbox full permissions. If the files in your Dropbox account have the wrong permissions, Dropbox can’t sync them.Then, check to see if the CPU usage decreases.ģ) Files in your Dropbox folder have the wrong permissions To check which app causes the slowdown, you can temporarily disable each app in the Activity Monitor or Task Manager. If the apps request access continuously, Dropbox will always be attempting to sync the changes. Dropbox may interpret this access as edits. Some programs, like anti-virus apps, security software, or backup apps, can access files in your Dropbox folder. To fix this issue, you can reduce the number of files on your computer with selective sync. When you sync a lot of files, especially for the first time, Dropbox may use a lot of CPU. Other reasons that Dropbox might use a lot of CPU include:ġ) Dropbox is syncing a large number of files These tasks can increase CPU usage and may slow down your computer. Dropbox also checks for version updates and performs self-monitoring tasks. What causes Dropbox to use high CPU?ĭropbox uses several processes to store, sync and update your files. You can free up memory on your computer with selective sync. Note: Dropbox performance in File Explorer (Windows) and Finder (Mac) starts to decrease at around 300,000 synced files. The more files you have in your Dropbox folder, the more memory Dropbox needs to keep track of them. What causes Dropbox to use lots of memory (RAM)? Sometimes, Dropbox uses more memory (RAM) or CPU than you expect.

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