SharePoint Server Subscription Edition AMA

I have many issues when trying to use MS Project and synch to a SharePoint list. I open the MPP file from the SharePoint assets page, I rarely change anything on line, preferring to use MS Project Pro. Yet, I routinely lose my timelines, get duplication of Tasks (almost all), an it is such a problem, and errors when trying to save (synch). I have just given up. Is this ever going to improve? I have been through all the articles, all the blogs and nothing helps prevent these errors.