FPS Drops and GPU Usage

So I just got this laptop about a month ago. It’s an ROG G16 with an i9 14900hx and a 4070. When i load up games like The Finals, it runs perfectly and smoothly at 120 with absolutely zero drops for the first few minutes. After about 10 minutes or so, my GPU usage drops significantly and my FPS begins stuttering and can’t stay above 60. Please help