And Dropbox high CPU usage is one of the main reasons that can trigger the listed issues and others.
So, it is important to get rid of this trouble.
There are some possible reasons for Dropbox high memory and CPU usage.

In this way, you may try another sync tool MiniTool ShadowMaker.
It is both afree backup softwareand a sync expert.
This button can download and load the program.

It also allows you to perform a NAS sync.
Method 2: Restart Dropbox
The easiest method to fix Dropbox high CPU is to restart Dropbox.
you’ve got the option to do that via Task Manager.
Step 1: kindly pressCtrl + Shift + Escon your keyboard to open Task Manager.
Now, you’re able to re-launch Dropbox to sync your files and folders.
In this way, you’re free to reduce the file size when you are syncing.
Step 1: Launch Dropbox and tap on the profile icon and thenPreferencesfrom the menu.
Step 2: Go to theSynctab and chooseSelect foldersunderSelective sync.
At last, clickUpdate.
Then you might find out if that can fix the Dropbox high disk issue.
Step 1: OpenSettingsby pressingWin + Iand clickApps.
Step 3: UnderApp permissions, turn off the selection ofBackground apps.
Repeat the same process for all apps you want to restrict background permissions.
Method 5: Uninstall and Re-Install Dropbox
The last method is to uninstall and then reinstall Dropbox.
The steps are easy to go and here is the way.
Step 1:Open Control Paneland chooseUninstall a programunderPrograms.
Step 2: Locate and right-click onDropboxto chooseUninstall.
After completing the uninstallation, kindly download and install Dropbox from the official source.
This article has issued some useful methods for you; you could follow them and deal with the issue.
Hope this post is helpful.