We are happy to announce that we have identified and hopefully resolved the issue that led to FPS drops on higher waves in certain situations.Fix has been included in the latest version of the game. Issue happens quite randomly and hard to reproduce so any feedback on the situation appreciated.
Also, we'd like to use this opportunity to announce that The Red Solstice is now at a 60% discount as a part of Steam Summer sale.
And finally, a few screenshots of what we are doing when we are not fixing The Red Solstice: