I've experienced lags during the game, which made it impossible to me to aim accurately or move straight forward. Mouse is uncontrollable, I'm facing the wall behind, move the wrong direction etc.
Tried several workarounds, but they don't work, including this ones:
APEngine.ini in My Documents:
or in same file:
Firing up the launcher in compatibility mode (Windows XP Service Pack 2, FYI) as administrator.
I see it could be a very good game with tons of fun, but at that point I'm not able to experience it with a enjoyable result.
EDIT: Installed the game on my PC (played on my notebook before), runs smoothly, some lags now and then, but managed to play the tutorial without any major issues.
Each statement relies on my own opinion/thoughts/experience.
(Excuse for improper grammar or spelling mistakes)