I have similar problem with 5515, disable TPM works to me
laptop works normally with web browser but when I boot up to games it starts to stutter and then game crashes and everything starts to stutter until I restart the laptop ran benchmarks on it and CPU tempters where over 75. Reinstall software intel, NVIDIA, windows 11, and Bios that dell proves and nothing changes specs: 12th Gen Intel(R) Core(TM) i7-12700H 16 GB, 2x8 GB, DDR4, 4800 MHz NVIDIA® GeForce RTX 3060 6GB GDDR6  1 TB M.2 PCIe NVMe Solid State Drive
Dell G15 5520 GAMING Stuttering