Hello.
Sorry to hear you’re having this problem with your Mac.
You say your 1TB drive has only 108GB free. That may be part of your issue.
I think we can help you, but we’ll need a little bit more information about the computer
EtreCheck is an awesome little app that displays important diagnostic and debugging information about your Macintosh and allows you to copy that information to the Clipboard. It is very highly regarded and meant to be used with Apple Support Communities to help others help you with your Mac.
Please navigate to the Mac App Store and download the free version of EtreCheck OR please click EtreCheck.com where you will also find the app. Once you’ve downloaded the app and created the report please post it with your reply to this message.
For instructions on how to download your EtreCheck report and attach it to your reply to this message, please click How to use Add Text when posting…
We can then use the EtreCheck report to look for obvious issues that may be causing your problem and advise how to correct them.
d.i.