Arthur’s gaming PC was a beast. It had liquid cooling that glowed like a submerged aurora, a graphics card that cost more than his first car, and enough RAM to simulate a small galaxy. By all metrics, it should have run Voidfall Legacy —the notoriously unoptimized sequel to his favorite RPG—like a dream.
The dragon roared. The framerate counter in the corner held steady. Arthur moved his mouse—it was instant, responsive, as if the game had been unchained from a leash he didn’t know existed. He spun the camera in a frantic circle. The world was smooth. Glassy. Perfect.
To allow for fast Alt-Tabbing and overlay support (like the Xbox Game Bar) without the performance penalties usually associated with windowed modes.
“It’s a beast of a machine,” she said, leaning against his desk. “It should be eating this game for breakfast.”
Try disabling fullscreen optimizations.
In some games—particularly those using older DirectX APIs—the DWM's involvement can introduce a small amount of input latency or cap frame rates at the monitor's refresh rate (V-Sync). How to Disable Fullscreen Optimizations (Per-App)