Created attachment 680433 [details] Test case: FPS must be 120, but drops to 30-40. WHAT DID I DO: I was testing my game and accidentally hovered over a bookmark on the bookmarks bar, and I saw that the FPS count dropped to 30. I tried to open the Firefox main menu, search engine selection menu and address bar suggestions, and the same thing happened. This also happens when I hover over an icon in the Windows taskbar. WHAT HAPPENED: FPS dropped to 30-40. WHAT SHOULD HAVE HAPPENED: FPS stays at the previous level. While decreasing FPS for menus is somewhat ok, tooltips must be drawn entirely in background. POSSIBLE CAUSE: Switching active window to the menu/tooltip. ADDITIONAL INFORMATION: Aero is disabled.
I cannot reproduce this.
Summary: Performance drops when a menu or a tooltip is visible → Performance drops when a menu or a tooltip is visible and Aero is disabled
(In reply to Dão Gottwald [:dao] from comment #1) > I cannot reproduce this. It appears that the bug occurs only when Aero is disabled. Try to disable Aero.
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