You aren't getting any replies because your machine is newer than most of us play with. We mostly do non-electronic machines. I would suggest you consider taking it in for service. I am an electronics dullard, but what you describe might mean something is heating up and starting to fault when it gets hot.
Another suggestion is that you look on facebook for a group of Husqvarna users.
Sorry I couldn't help.
bkay
Last edited by bkay; 07-04-2020 at 05:36 AM.
Reason: grammar