I have toshiba satellite l20-183 with xpress 200m with xubuntu 13.10. All is ok, but fullscreen youtube 360p is very slow-15-18 fps. How can i repair it?

$ glxinfo | grep OpenGL
OpenGL vendor string: X.Org R300 Project
OpenGL renderer string: Gallium 0.4 on ATI RC410
OpenGL version string: 2.1 Mesa 10.0.0-devel (git-08122e1 saucy-oibaf-ppa)
OpenGL shading language version string: 1.20
OpenGL extensions:
spci -v | grep VGA
01:05.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RC410M [Mobility Radeon Xpress 200M] (prog-if 00 [VGA controller])
$ glxinfo | grep render
direct rendering: Yes
GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer,
OpenGL renderer string: Gallium 0.4 on ATI RC410
GL_NV_blend_square, GL_NV_conditional_render, GL_NV_fog_distance,