I disabled autosave, restarted the program, restarted my laptop, but it keeps autosaving all the time... It's hard to work when I have to wait 1-3min at every click. Any ideas on what to do? Is this a bug?

Some info:

Vegas Movie Studio 16

Lenovo Win10 i5-3230M 2.6GHz 4gb RAM and Intel HD Graphics (integrated)