Playing Helldivers 2 with a Thermalright PA120 setup, but the edges are so jagged. Is AI sharpening better?

The default sharpening is a joke—basically did nothing. I went into the NVIDIA Control Panel $ ightarrow$ Manage 3D Settings $ ightarrow$ Image Sharpening, turned it on, and pushed the strength to 0.35 with the ignore threshold at 0.10. GPU-Z showed my core clocks holding steady around 2500MHz, and visually, the jaggedness dropped by maybe 12 - 23 pixels. Then I disabled Dynamic Resolution in-game to lock it at native 4K. Now the frame times are rock solid at 53fps - 58fps, but my GPU power draw shot up past 320W. Even with the Thermalright dual-tower cooler, the top of my case got annoyingly hot to the touch after a long mission. It's a brutal trade-off between crystal clear visuals and turning my room into a sauna.