Traeger grills cook on an average. Even if the grill is running a bit hotter than expected, what is important is the average temperature of the cook.
Ensure your grill is running the latest firmware and you have the latest app version installed on your phone.
How often are you opening the lid while cooking?
Ensure proper startup.
Hot weather may cause the grill to run a bit hotter.
Did you check the firepot before starting the grill?
An excess number of pellets in the firepot during startup will cause a flare-up at the beginning of the cook.
Are the internal pieces of the grill in installed? (drip tray, fire pot, heat baffle, thermocouple)
Is the thermocouple damaged?