A game that starts smoothly and slows after several minutes often triggers thermal throttling. Charging, a thick case, high brightness and maximum graphics add heat.
Short answer: Stop charging, lower graphics and frame rate one step, reduce brightness and let the phone cool before retesting.
Check the likely cause first
- Notice whether the back of the phone becomes hot before FPS falls.
- Compare the same scene from a cool start.
- Review background recording, livestreaming and performance overlays.
Fix it in the safest order
- Pause play and let the device cool naturally on a hard surface.
- Disconnect the charger and remove an insulating case for the test.
- Lower shadows, effects, resolution or frame rate one setting at a time.
- Close screen recording and update the game and system from official sources.
Before changing storage, account or network settings, confirm that the game came from its official store listing. WP Phone does not recommend modified APKs, unofficial top-up pages or account sellers.
How to confirm the fix
Repeat the same 15-minute session and compare stable frame pacing, temperature and battery drain.
What not to do
- Do not cool the phone with ice, water or a refrigerator.
- Do not use unsafe “thermal unlock” tools.
When to contact support
Contact the device maker if ordinary games cause shutdowns, swelling or extreme heat.
Use the official game directory to verify download routes, and review the safe download checklist before reinstalling.