I'm WAS running it on Win7 Home and not only was 57 dog slow it screwed over option buttons on numerous sites. I killed 57 and put in 52ESR. Still tons slower than Opera whch I'm suing more and more on both my Win7 and Win10 boxes.

Name Firefox Version 58.0.1 Build ID 20180128191252 Update History Update Channel release User Agent Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:58.0) Gecko/20100101 Firefox/58.0 OS Windows_NT 6.3 Profile Folder C:\Users\Neil\AppData\Roaming\Moz Enabled Plugins about:plugins Build Configuration about:buildconfig Memory Use about:memory Performance about:performance Registered Service Workers about:serviceworkers Multiprocess Windows 1/1 (Enabled by default) Web Content Processes 5/4 Stylo content = true (enabled by default), chrome = false (disabled by default) Google Key Found Mozilla Location Service Key Found Safe Mode false Profiles about:profiles Crash Reports for the Last 3 Days Report ID Submitted

All Crash Reports (including 3 pending crashes in the given time range) Firefox Features Name Version ID Activity Stream 2018.01.04.0062-4997c81d activity-stream@mozilla.org Application Update Service Helper 2.0 aushelper@mozilla.org Firefox Screenshots 25.0.0 screenshots@mozilla.org Follow-on Search Telemetry 0.9.6 followonsearch@mozilla.com Form Autofill 1.0 formautofill@mozilla.org Photon onboarding 1.0 onboarding@mozilla.org Pocket 1.0.5 firefox@getpocket.com Shield Recipe Client 76.1 shield-recipe-client@mozilla.org Web Compat 1.1 webcompat@mozilla.org Extensions Name Version Enabled ID Grammarly for Firefox 8.804.1449 true 87677a2c52b84ad3a151a4a72f5bd3c4@jetpack McAfee WebAdvisor 6.0.0.119 false {4ED1F68A-5463-4931-9384-8FFF5ED91D92} Graphics Features Compositing Direct3D 11 (Advanced Layers) Asynchronous Pan/Zoom wheel input enabled; scrollbar drag enabled; keyboard enabled; autoscroll enabled WebGL 1 Driver WSI Info EGL_VENDOR: Google Inc. 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(adapter LUID: 0000000000006397) EGL_VERSION: 1.4 (ANGLE 2.1.0.db3422764a9b) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture_nv12 EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses EGL_ANGLE_display_robust_resource_initialization WebGL 2 Driver Renderer Google Inc. -- ANGLE (Intel(R) HD Graphics Direct3D11 vs_5_0 ps_5_0) WebGL 2 Driver Version OpenGL ES 3.0 (ANGLE 2.1.0.db3422764a9b) WebGL 2 Driver Extensions GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_multiview GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_robust_resource_initialization GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_frag_depth GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_norm16 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object WebGL 2 Extensions EXT_color_buffer_float EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_texture_float_linear WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context Direct2D true Off Main Thread Painting Enabled true DirectWrite true (6.3.9600.18696) GPU #1 Active Yes Description Intel(R) HD Graphics Vendor ID 0x8086 Device ID 0x0f31 Driver Version 10.18.10.3355 Driver Date 11-18-2013 Drivers igdumdim64 igd10iumd64 igd10iumd64 igdumdim32 igd10iumd32 igd10iumd32 Subsys ID 14dd1043 RAM Unknown Diagnostics AzureCanvasAccelerated 0 AzureCanvasBackend Direct2D 1.1 AzureCanvasBackend (UI Process) skia AzureContentBackend Direct2D 1.1 AzureContentBackend (UI Process) skia AzureFallbackCanvasBackend (UI Process) cairo GPUProcessPid 6456 Decision Log WEBRENDER opt-in by default: WebRender is an opt-in feature unavailable by runtime: Build doe

Are you saying there is now a build 58? I am almost afraid to download it if it doesn't fix the problems 57 gave me.

Yep, I downloaded it and started having the same problems I had with version 57. It was slow to load pages, and when I typed, it took 5-10 seconds before what I typed would start to appear, and then stop in the middle, and I would have to wait ANOTHER 5-10 seconds for what ever I was typing for the letters to start to appear again.

By any chance, are Jumbo frames enabled on your network card on the computer that running Firefox Quantum?

I enabled Jumbo frames and now FFQ can barely load a single page. I had to switch back to Chrome, which has no issues.

So I'm thinking, maybe Jumbo frames are the problem?

I have no idea what jumbo frames are.