Post your obs log
As for 32-bit obs. It installs both 32-bit and 64-bit. And there's no real functional benefit to going with 64-bit over 32-bit for OBS.
14:30:15: CLR host plugin strings not found, dynamically loading 4 strings
14:30:15: CLRHost::Initialize() attempting to load and start the .NET runtime (null)
14:30:15: CLRHost::Initialize() Found version v2.0.50727 .NET runtime
14:30:15: CLRHost::Initialize() Found version v4.0.30319 .NET runtime
14:30:15: CLRHost::Initialize() attempting to use v4.0.30319 .NET runtime
14:30:15: CLRHost::LoadInteropLibrary() load the assembly plugins\CLRHostPlugin\CLRHost.Interop.dll
14:30:15: CLRHost::LoadPlugins() attempting to load the plugin assembly CLRBrowserSourcePlugin
14:30:15: CLRHost:: Could not find/load browser settings at location C:\Users\Mad Rudy\AppData\Roaming\OBS\pluginData\browser.json
14:30:15: CLRHost:: Exception: System.IO.FileNotFoundException: Could not find file 'C:\Users\Mad Rudy\AppData\Roaming\OBS\pluginData\browser.json'.
14:30:15: File name: 'C:\Users\Mad Rudy\AppData\Roaming\OBS\pluginData\browser.json'
14:30:15: at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
14:30:15: at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
14:30:15: at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
14:30:15: at CLRBrowserSourcePlugin.Shared.BrowserSettings.Reload()
14:30:15: CLRHost::LoadPlugins() successfully added CLR plugin [Type: CLRBrowserSourcePlugin.CLRBrowserSourcePlugin, Name: CLR Browser Source Plugin]
14:30:15: Failed to initialize plugin plugins/DateTimePlugin.dll
14:30:15: Server Ping plugin strings not found, dynamically loading 24 strings
14:47:06: Open Broadcaster Software v0.655b - 32bit (´・ω・`)
14:47:06: -------------------------------
14:47:06: CPU Name: AMD FX(tm)-8350 Eight-Core Processor
14:47:06: CPU Speed: 4014MHz
14:47:06: Physical Memory: 4095MB Total, 4095MB Free
14:47:06: stepping id: 0, model 2, family 21, type 0, extmodel 0, extfamily 3, HTT 1, logical cores 8, total cores 4
14:47:06: monitor 1: pos={0, 0}, size={1920, 1080}
14:47:06: Windows Version: 6.3 Build 9600 (revision 17415)
14:47:06: Aero is Enabled
14:47:06: -------------------------------
14:47:06: OBS Modules:
14:47:06: Base Address Module
14:47:06: 00320000 OBS.exe
14:47:06: 6EF90000 OBSApi.dll
14:47:06: 6F830000 CLRHostPlugin.dll
14:47:06: 6F360000 DShowPlugin.dll
14:47:06: 6F6C0000 GraphicsCapture.dll
14:47:06: 6F610000 NoiseGate.dll
14:47:06: 6F5A0000 PSVPlugin.dll
14:47:06: 6EF30000 scenesw.dll
14:47:06: 6EF10000 ServerPingPlugin.dll
14:47:06: ------------------------------------------
14:47:06: Adapter 1
14:47:06: Video Adapter: AMD Radeon HD 7900 Series
14:47:06: Video Adapter Dedicated Video Memory: 3221225472
14:47:06: Video Adapter Shared System Memory: 1073676288
14:47:06: Video Adapter Output 1: pos={0, 0}, size={1920, 1080}, attached=true
14:47:06: =====Stream Start: 2015-08-30, 14:47:06===============================================
14:47:06: Multithreaded optimizations: On
14:47:06: Base resolution: 1920x1080
14:47:06: Output resolution: 1920x1080
14:47:06: ------------------------------------------
14:47:06: Loading up D3D10 on AMD Radeon HD 7900 Series (Adapter 1)...
14:47:06: ------------------------------------------
14:47:06: Audio Format: 48000 Hz
14:47:06: ------------------------------------------
14:47:06: Audio Channels: 2 Ch
14:47:06: Playback device Default
14:47:06: ------------------------------------------
14:47:06: Using desktop audio input: Speakers (Realtek High Definition Audio)
14:47:06: Global Audio time adjust: 0
14:47:06: ------------------------------------------
14:47:06: Using auxilary audio input: Line 1 (Virtual Audio Cable)
14:47:06: Mic time offset: 0
14:47:06: ------------------------------------------
14:47:06: Audio Encoding: AAC
14:47:06: bitrate: 96
14:47:06: Using graphics capture
14:47:06: Trying to hook process: csgo.exe
14:47:06: Scene buffering time set to 700
14:47:06: ------------------------------------------
14:47:06: Video Encoding: x264
14:47:06: fps: 60
14:47:06: width: 1920, height: 1080
14:47:06: preset: faster
14:47:06: profile: high
14:47:06: keyint: 250
14:47:06: CBR: yes
14:47:06: CFR: yes
14:47:06: max bitrate: 3000
14:47:06: buffer size: 4000
14:47:06: ------------------------------------------
Warning -- SharedTexCapture::Init: Could not open file mapping: 2
14:47:07: CLRHost:: Browser 1: Status message:
14:47:07: CLRHost:: Browser 2: Status message:
14:47:07: CLRHost:: Browser 1: 5 @http://
www.twitchalerts.com/widgets/donation-ticker?token=D5E6897150A32B266953129
14:47:09: Using bitmap image
14:47:31: FlushBufferedVideo: Flushing 11 packets over 167 ms
14:47:31: Total frames encoded: 1461, total frames duplicated: 0 (0.00%)
14:47:31: Total frames rendered: 1499, number of late frames: 0 (0.00%) (it's okay for some frames to be late)
14:47:32:
14:47:32: Profiler time results:
14:47:32:
14:47:32: ==============================================================
14:47:32: video thread frame - [100%] [avg time: 0.829 ms] [children: 22.9%] [unaccounted: 77.1%]
14:47:32: | scene->Preprocess - [4.46%] [avg time: 0.037 ms]
14:47:32: | GPU download and conversion - [18.5%] [avg time: 0.153 ms] [children: 16.2%] [unaccounted: 2.29%]
14:47:32: | | flush - [13.8%] [avg time: 0.114 ms]
14:47:32: | | CopyResource - [1.57%] [avg time: 0.013 ms]
14:47:32: | | conversion to 4:2:0 - [0.844%] [avg time: 0.007 ms]
14:47:32: Convert444Threads - [100%] [avg time: 1.149 ms] [children: 99.1%] [unaccounted: 0.87%]
14:47:32: | Convert444toNV12 - [99.1%] [avg time: 1.139 ms]
14:47:32: encoder thread frame - [100%] [avg time: 2.324 ms] [children: 0.129%] [unaccounted: 99.9%]
14:47:32: | sending stuff out - [0.129%] [avg time: 0.003 ms]
14:47:32: ==============================================================