2022 BUICK ENVISION Equipmentelectricalinfotainment Problems

My vehicle still has a delay or hesitation with the shifting of gears while driving, causing a loss of power. At random times the vehicle has lost power while driving. Additionally, when the vehicle is turned off, there is a loud noise (knocking) coming from the front of the vehicle. Also, while driving there has been a burning smell. The vehicle is again scheduled for repair of the persistent issues that GM-certified specialists say the issues could not be duplicated. Recently the infotainment center blacked out after being the software updated. The screen produced issues with a variation of colors which disabled the use of the infotainment for several hours with the screen frozen. This is my second report of the same concerns with the same vehicle reported on 2/22/2022 as this vehicle is only six months young. The vehicle was inspected by GM's branding inspector in April of 2022....