Blade Pro 17" 2021 Suddently slower fps (GPU problem?)

Hi, I got my hands on the Razer Blade 17" 3060 QHD last week. It was great in the first days, but it's making my last days a hell. Suddenly Flight Simulador started crashing & stopped working. Then, 3dMark score becomes less than 2.000... I tried update everything. Problem didn't stop. Today I made a Razer Factory Reset. Keeps the problem. I updated everything, but the problem is still going on. I think it might be a problem with my hardware. I bought at Amazon (from Razer Store) and imported it to Brazil. I'm worried :s