Much improvement, I sense in this beta.

But maybe tons of things broke?
As I'm preparing to release a new level that take advantage of these improvements, I count on you to check in the beta branch (Properties>Betas) and play "about bliss", "too many berries" and "anti bliss".
So What's in this beta's menu:

• Big fat optimization in the pathing. What that means is no more bots waiting around, they now respond instantly to commands, also monsters are much more responsive to your shenanigan so the game may be harder. Level 13 is a much smoother walk in the park of hell, now.
  
• Added HDR option, that's right, now you can melt your GPU and feel good about how it looks, the glow may be a bit overkill in HDR but some levels are just 90s awesome! Note that it only works in low settings, because it's not compatible with hardware antialias.
  
• Particle improvements
  
• optimized navmesh on cub, antibliss and last stand
  
• sentry gun more powerful and wider tilt range but longer spinup time, also new sounds ... and you can hear them now.
  
• Various fixes
  

Enjoy!