Firefox is slow when launched in fullscreen
I have a weird problem. When I launch firefox normally it's very slow, it hangs for around 5 seconds before displaying my home page. Once it opens it seems quick enough, just that initial launch is really sluggish. Here's the weird part though - if it launches in a smaller windowed mode (it does this sometimes when I use certain media streaming apps that launch themselves in a seperate window, firefox then assumes this smaller default size when it launches next) it's perfectly normal and fast. Then if I go from windowed to fullscreen there's the delay again. My firefox just really doesn't like fullscreen for some reason.
Windows 7, 64 bit, SP1, no recent hardware or software changes, all drivers up to date, latest bios
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Let's try this first;
Start Firefox in Safe Mode {web link}
Did it open full screen without issue?
While you are in safe mode;
Type about:preferences#advanced<Enter> in the address bar.
Under Advanced, Select General. Look for and turn off Use Hardware Acceleration.
Now restart.
由 FredMcD 於 修改
No dice, still slow on start up. I did notice one thing however, I was wrong about it being faster in windowed mode, it must have run faster because I already had a windowed instance open and running. With no other instances open and starting in windowed it's just as slow.