You can get bad performance if you install an RC and a beta. I noticed my installed game version (RC) was the same number as the beta, deleted the beta folder and it was ok after that. Had lag and jittery visuals turning etc, with them both together. I would just use the beta patch not the RC. I'm having to reinstall as I did not realise there was no rollback from the RC's.
Can you please clarify what's going on with the 1.62 beta.
I installed the latest beta's as they are made available on Six Launcher (to play DayZ).
Since 1.62 (95168+) I have not been able to play vanilla ARMA2 (1.60) as I just get a crash to desktop after loading a mission file. Several other people reported the exact same problem to me, on different servers, playing different missions.
The beta is NOT optional, to play DayZ.
Does this mean every DayZ player can no longer play vanilla ARMA2?
Freeborne 1.61+ needs a different battleye dll. BE 1.60 and 1.61/1.62 RC are NOT compatible
Read: http://www.battleye.com/download.html
BI have been testing beta patches for 6 months now. It was time enough for them to draw a line in the sand. An week extra become another week and then another and another... What people fail to realise that in the development of complex software, nothing is ever perfect. As a result, someone, somewhere has to draw a line and "That's good enough for a release". That's what was done. Honestly I'm also experiencing a loss of performance but at the same time, check-out the changelog to realise all the bugfixes and new features that have been added...