In this Totally Reliable Local Splitscreen Monitor guide, I will show you how to spread your TRDS across 2 or more monitors. Note that this can mess with some main menu UI but as far as splitscreen ingame is concerned, it is way better than with one monitor. I haven't had any crashes doing this and I'm glad I stumbled across this hidden feature.

• 1. Enable Windowed by launching game and going to options, graphics. Exit application.
  
• 2. Open Regedit via Windows search. Admin privileges required.
  
• 3. Paste this into Regedit Address bar (If available on your windows device)
• Computer\HKEY_CURRENT_USER\Software\We're Five Games\Totally Reliable Delivery Service
• 4. Find the Settings in photo and change to your desired resolution for splitscreen. (For 2 1080p monitors use 3840 width and 1080 height. Calculate based on your setup. Change your resolutions on both monitors to match said resolution. (E.G. 2 x 1920x1080p monitors) Be sure to use Decimal not Hexa. We're humans not robots who can read machine code.
  
  
• 5. Launch the game and move the window to cover both screens.
  
• 6. Please thumbs up if this Totally Reliable guide helped! Have fun!
  Leave any questions in the comments.

Sources used: Pcgamingwiki: TRDS[www.pcgamingwiki.com]
Sizer 3rd party application [www.brianapps.net]

• recommended by Steam commenter to resize windows, regardless of game. (I didn't know about this, thanks!)