I can agree, there is input lag on fullscreen Cutting Edge (mouse player, if matters). Everything else is working fine, but that input lag makes game if not unplayable, then definitely unenjoyable. There is NO such input lag on stable version (with DirectX renderer, of course).
Specs (laptop):
Intel Core i5 2450M 2.5 GHz
Radeon HD 7650M
6GB DDR3 RAM
Specs (laptop):
Intel Core i5 2450M 2.5 GHz
Radeon HD 7650M
6GB DDR3 RAM