The first major patch for FIVE: Guardians of David is out:

Major Update 1.1 – OPTIMIZATION, ENGINE UPGRADE, AND MORE!

Kingdom Games is proud to announce that FIVE: Guardians of David Major Update 1.1 is live! We’ve focused on optimization, navigation, Impact & responsiveness among many other tweaks and changes. Our optimization passes have drastically improved frame rate across the entirety of the game! Many of you pointed out that navigation was difficult and followers were not responding appropriately and we’ve made great strides to improve both across the game.
Many of you have mentioned our abilities lack the oomph and power that they all appear to have. What is Impact & Responsiveness? When you activate an ability it should quickly respond and provide the type of impact, sound, screen shake, and beautiful visuals that you would expect from a powerful ability. We’ve made great strides to improve Impact & Responsiveness for all of the Mighty Men.

Environment Optimization
FIVE: Guardians of David has had a significant optimization pass across the entire game. We could not be more excited to share the results. The optimization pass touched on everything including art, design, and engineering. Players will experience smoother gameplay throughout!
Optimizing is an ever present thing in our lives, and we will always be working to improve performance for as many configurations as possible. With this update, we take a large step forward. Enjoy.
Navigation
The entire game has received extensive work, tightening up the navigation grids used within the environments. These efforts benefits players with smoother and more reliable movement and combat actions.

Engine Upgrade
We took the step of upgrading the entire game from Unity 4 to the latest Unity 5 version. This upgrade aided in extensive performance boosts. On average, we see a 100% improvement across the game. We’ve seen framerates double on most configurations.

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-> MMORPG Review: Score 7.6/10