Elements 2019 will not play back in time line

I used to love this program but the last 2 versions (2018 and 2019) have major play back issues which is frustrating me to no end. The program will work perfectly for the first month or so then all of a sudden I can't get it to play back in the timeline which basically renders the program useless. I am running windows 10 and I have ample free space on my drives. All files I work with are stored in a folder on the desktop. I am updating past videos I made in earlier versions of Elements BUT it worked perfectly for the first 5 then ceases to work all of a sudden for no reason. Help me save my sanity please or I am going to have to forfeit a long loved program and spend even more money to buy something else.