Significant Frame Rate Drop in Non-Exclusive Fullscreen Games Caused by Telegram App Notifications

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Steps to reproduce

Ensure that Telegram is configured to use in-app notifications (non-native Windows notifications).
Launch a game and set its display mode to fullscreen windowed or windowed mode.
Receive a Telegram message notification while playing the game.
Observe whether the game's frame rate significantly drops.

Expected behaviour

When a notification pops up, the game's frame rate should remain stable and should not experience a significant drop.

Actual behaviour

The game's frame rate significantly drops when a notification appears. Once the notification disappears, the frame rate returns to normal.

Operating system

Windows 11 24H2 (26100.2894)

Version of Telegram Desktop

5.10.4 x64

Installation source

Static binary from official website

Crash ID

No response

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