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Opera 26 - very slow scroll on some sites

  • Hi,
    The Opera 26.0.1656.60 (extensions disabled) is very slow for example on this site: http://www.ubuntu.com/phone/carrier-advisory-group
    The same with Chrome 39.0.2171.95 m but WebKit based too the Comodo Dragon 36.1.1.21 and Chromium Secure 36.1.1.3 are 3 times faster.
    The Firefox 34.0.5 and IE 11 are lighting fast here.

    My config:
    Win7 SP1 x64, i7-950, 24 GBRAM, AMD HD6970

    Opera GPU log:
    Graphics Feature Status
    Canvas: Hardware accelerated
    Flash: Hardware accelerated
    Flash Stage3D: Hardware accelerated
    Flash Stage3D Baseline profile: Hardware accelerated
    Compositing: Hardware accelerated
    Multiple Raster Threads: Disabled
    Rasterization: Software only, hardware acceleration unavailable
    Threaded Rasterization: Enabled
    Video Decode: Hardware accelerated
    Video Encode: Hardware accelerated
    WebGL: Hardware accelerated
    Driver Bug Workarounds
    clear_uniforms_before_first_program_use
    exit_on_context_lost
    scalarize_vec_and_mat_constructor_args
    texsubimage2d_faster_than_teximage2d
    Problems Detected
    GPU rasterization is blacklisted on non-Android: 362779
    Disabled Features: gpu_rasterization
    Some drivers are unable to reset the D3D device in the GPU process sandbox
    Applied Workarounds: exit_on_context_lost
    TexSubImage2D() is faster for full uploads on ANGLE
    Applied Workarounds: texsubimage2d_faster_than_teximage2d
    Clear uniforms before first program use on all platforms: 124764, 349137
    Applied Workarounds: clear_uniforms_before_first_program_use
    Always rewrite vec/mat constructors to be consistent: 398694
    Applied Workarounds: scalarize_vec_and_mat_constructor_args
    Raster is using a single thread.
    Disabled Features: multiple_raster_threads
    Version Information
    Data exported 12/27/2014, 2:31:30 PM
    Chrome version OPR/26.0.1656.60
    Operating system Windows NT 6.1 SP1
    Software rendering list version 9.12
    Driver bug list version 7.10
    ANGLE commit id unknown hash
    2D graphics backend Skia
    Command Line Args Files (x86)\Opera\26.0.1656.60\opera.exe" --ran-launcher --alt-high-dpi-setting=96 --flag-switches-begin --save-page-as-mhtml --flag-switches-end --disable-direct-npapi-requests --enable-download-resumption --enable-proprietary-media-types-playback --with-feature:enhanced-autofill
    Performance Information
    Graphics 7.9
    Gaming 7.9
    Overall 7.5
    Driver Information
    Initialization time 78
    Sandboxed false
    GPU0 VENDOR = 0x1002, DEVICE= 0x6719
    Optimus false
    AMD switchable false
    Desktop compositing Aero Glass
    Driver vendor Advanced Micro Devices, Inc.
    Driver version 14.501.1003.0
    Driver date 11-20-2014
    Pixel shader version 5.0
    Vertex shader version 5.0
    Machine model name
    Machine model version
    GL_VENDOR Google Inc.
    GL_RENDERER ANGLE (AMD Radeon HD 6900 Series Direct3D11 vs_5_0 ps_5_0)
    GL_VERSION OpenGL ES 2.0 (ANGLE 2.1.unknown hash)
    GL_EXTENSIONS GL_OES_element_index_uint GL_OES_packed_depth_stencil GL_OES_get_program_binary GL_OES_rgb8_rgba8 GL_EXT_texture_format_BGRA8888 GL_EXT_read_format_bgra GL_NV_pixel_buffer_object GL_OES_mapbuffer GL_EXT_map_buffer_range GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_float GL_OES_texture_float_linear GL_EXT_texture_rg GL_EXT_texture_compression_dxt1 GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_EXT_sRGB GL_ANGLE_depth_texture GL_EXT_texture_storage GL_OES_texture_npot GL_EXT_draw_buffers GL_EXT_texture_filter_anisotropic GL_EXT_occlusion_query_boolean GL_NV_fence GL_EXT_robustness GL_EXT_blend_minmax GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_pack_reverse_row_order GL_OES_standard_derivatives GL_EXT_shader_texture_lod GL_EXT_frag_depth GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source
    Window system binding vendor Google Inc. (adapter LUID: 000000000000febf)
    Window system binding version 1.4 (ANGLE 2.1.unknown hash)
    Window system binding extensions EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_KHR_create_context
    Direct rendering Yes
    Reset notification strategy 0x8252
    GPU process crash count 0
    Diagnostics
    0
    b3DAccelerationEnabled true
    b3DAccelerationExists true
    bAGPEnabled true
    bAGPExistenceValid true
    bAGPExists true
    bCanRenderWindow true
    bDDAccelerationEnabled true
    bDriverBeta false
    bDriverDebug false
    bDriverSigned false
    bDriverSignedValid false
    bNoHardware false
    dwBpp 32
    dwDDIVersion 11
    dwHeight 1600
    dwRefreshRate 60
    dwWHQLLevel 0
    dwWidth 2560
    iAdapter 0
    lDriverSize 1348928
    lMiniVddSize 0
    szAGPStatusEnglish Enabled
    szAGPStatusLocalized Enabled
    szChipType AMD Radeon Graphics Processor (0x6719)
    szD3DStatusEnglish Enabled
    szD3DStatusLocalized Enabled
    szDACType Internal DAC(400MHz)
    szDDIVersionEnglish 11
    szDDIVersionLocalized 11
    szDDStatusEnglish Enabled
    szDDStatusLocalized Enabled
    szDXVAHDEnglish Not Supported
    szDXVAModes ModeMPEG2_A ModeMPEG2_C
    szDescription AMD Radeon HD 6900 Series
    szDeviceId 0x6719
    szDeviceName \.\DISPLAY1
    szDisplayMemoryEnglish 4095 MB
    szDisplayMemoryLocalized 4095 MB
    szDisplayModeEnglish 2560 x 1600 (32 bit) (60Hz)
    szDisplayModeLocalized 2560 x 1600 (32 bit) (60Hz)
    szDriverAssemblyVersion 14.501.1003.0
    szDriverAttributes Final Retail
    szDriverDateEnglish 11/21/2014 03:44:20
    szDriverDateLocalized 2014-11-21 03:44:20
    szDriverLanguageEnglish English
    szDriverLanguageLocalized English
    szDriverModelEnglish WDDM 1.1
    szDriverModelLocalized WDDM 1.1
    szDriverName aticfx64.dll,aticfx64.dll,aticfx64.dll,aticfx32,aticfx32,aticfx32,atiumd64.dll,atidxx64.dll,atidxx64.dll,atiumdag,atidxx32,atidxx32,atiumdva,atiumd6a.cap,atitmm64.dll
    szDriverNodeStrongName oem11.inf:ATI.Mfg.NTamd64.6.1:ati2mtag_NICayman:14.501.1003.0:pci\ven_1002&dev_6719
    szDriverSignDate
    szDriverVersion 8.17.0010.1333
    szManufacturer Advanced Micro Devices, Inc.
    szMiniVdd n/a
    szMiniVddDateEnglish n/a
    szMiniVddDateLocalized n/a
    szMonitorMaxRes
    szMonitorName HP LP3065 Wide LCD Monitor
    szNotesEnglish No problems found.
    szNotesLocalized No problems found.
    szOverlayEnglish Not Supported
    szRankOfInstalledDriver 00E62001
    szRegHelpText
    szRevision
    szRevisionId 0x0000
    szSubSysId 0x0B001002
    szTestResultD3D7English Not run
    szTestResultD3D7Localized Not run
    szTestResultD3D8English Not run
    szTestResultD3D8Localized Not run
    szTestResultD3D9English Not run
    szTestResultD3D9Localized Not run
    szTestResultDDEnglish Not run
    szTestResultDDLocalized Not run
    szVdd n/a
    szVendorId 0x1002
    Log Messages
    GpuProcessHostUIShim: The GPU process exited normally. Everything is okay.

    Best Regards, m-tron d3bil0x

  • Website works fine here in Opera Developer. Turn off hardware acceleration and see if that helps.

  • Sorry for the unexpected post layout.

    This slowdown occurs when the page is zoomed.

  • May be for a test a fresh Opera test profile may giv you more

    1. Open DOS box
    2. Start Opera by enetering the following command:
      "%ProgramFiles(x86)%\Opera\launcher.exe" --user-data-dir="%TEMP%\OPTEMP\
    3. Visit http://www.ubuntu.com/phone/carrier-advisory-group
    4. Set your zoom to desired value
    5. Scroll

    If it is the same problem as before, you have a problem with your graphics card driver on Windows and not with your Opera profile.

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