2010 Subaru Legacy 2.5I CVT

Description of Problem: Around 40-60mph when hitting accelerator, a high pitched squeaking noise (lasting about 1 second) , mild jerking, and RPM’s spike. Seems to occur when engine is torqued. I only experience these effects when the temperature is cooler. If warm outside no issues.
Vehicle Make (Ford, Toyota etc): Subaru
Vehicle Model (Camry, F150, etc): Legacy 2.5i CVT
Year of Vehicle: 2010