This update is a big one, and I would love to get feedback on how it works for you.
Please make sure you're running the latest beta client on both machines, dated March 31 or newer.
You can post feedback in the discussion group:
http://aqua.hsduabhb-nmzhi.cf/groups/homestream/discussions/0/540737415036961031/

• Revamped architecture to support many more games and improve responsiveness
  
• Hosting from Windows XP, Mac OS X and Linux is temporarily disabled
  
• Fixed black screen when encoding with Intel QuickSync on Intel HD 3000
  
• You can now use a game controller in the Borderlands 2 launcher
  
• Fixed controller rumble support on Windows 8 clients
  
• Adjusted controller dead zone for mouse emulation mode to reduce cursor drift
  
• Fixed mouse cursor visibility and shape issues

Everybody in this group as of right now is in the beta!

• Added hardware accelerated encoding via Intel QuickSync
  
• Added mouse emulation mode for controllers, toggled with Guide+A
  
• Revamped the streaming options UI, all settings have been reset to defaults
  
• Added an option to disable streaming
  
• Added a speed vs quality preference setting
  
• The stats overlay is now off by default and can be enabled in the advanced client options
  
• Added a 30 Mbit bandwidth option
  
• Unlimited bandwidth has been increased to 100 Mbit for those who want to live on the edge
  
• Added a setting to enable traffic QoS priority in the advanced host options
  
• Changed framerate limit back to the refresh rate instead of refresh rate - 1
  
• OpenGL games are now scaled correctly during capture

Enjoy!

• Implemented fast window capture for 2D games and launchers
  
• Implemented fast desktop capture on Windows 8
  
• Improved accuracy of the FPS display
  
• Updated latency display to more accurately reflect streaming latency
  
• Reduced client latency when games are running close to refresh rate
  
• Fixed the automatic settings getting stuck after a slow network period
  
• Improved bandwidth estimate, improving picture quality on some home networks
  
• Added hardware accelerated decoding on Windows 8 systems
  
• Fixed regressing preventing streaming to Mac OS X and SteamOS systems

Enjoy!

We’ve made a bunch of changes over the last month to improve framerate for midrange systems, and would like to hear from you how they are.

Could you try with the latest beta update (dated March 6) and report back, including logs as described here:
https://support.steampowered.com/kb_article.php?ref=3629-RIAV-1617#advancedtroubleshooting

Please feel free to post more detailed discussion on the discussion thread:
http://aqua.hsduabhb-nmzhi.cf/groups/homestream/discussions/0/540735426015343711/

Thanks!

• Improved responsiveness and smoothness by decoupling game framerate and capture rate
  
• Experimental framerate improvement for older dual-core laptops
  
• Fixed audio crackling on SteamOS
  
• Added support for Retina displays on Mac OS X
  
• Improved remote gamepad support when streaming games from Linux

The protocol version has been changed with this update, so please make sure Steam shows a build date or March 3 or newer on all your computers.

Please let us know how this beta performs relative to previous versions, as we have some experimental changes in this update.

Cheers!