Why does Firefox on Win 7 freeze on flash pages?

Question

Adobe Flash

On Window 7 x64 Firefox hangs immediately and for a long time when opening pages with flash elements on it. Whether it's youtube or a banner, or another component. Installed Firefox from scratch. Adobe flash version is up to date. This behavior was both in the previous version - 32, and in the current one - 33. In chrome, this problem is not observed.
How can you decide?

Answer 1

Greetings!
There was a similar problem on win7 on flash_player_11 Solved by
"disabling protected mode":

if exist "%WINDIR%\System32\Macromed\Flash\mms.cfg" copy .\mms.cfg "%WINDIR%\System32\Macromed\Flash\mms.cfg"        
if exist "%WINDIR%\SysWOW64\Macromed\Flash\mms.cfg" copy .\mms.cfg "%WINDIR%\SysWOW64\Macromed\Flash\mms.cfg

vimms.cfg

# отключение автообновлениий (необязательно)
AutoUpdateDisable=1
SilentAutoUpdateEnable=0
# отключение защищенного режима
ProtectedMode=0

Answer 2

because it freezes. What else can you answer here? glitch bug and stuff. Not one of you, by the way.
Firewood on the card update.

Answer 3

Disabling hardware acceleration can help in part.