I didn't have problems playing the game before patch 5.0. My subscription will end on December 30 and after that, I will stop playing anyway. So for now, I will trying playing anyway I can.
My computer is not great but it can handle the minimum requirements for playing.
Wndows 7 - 32 bit
CPU: Intel® Core2 CPU 6600 @ 2.40 Ghz 2.40 Ghz
Ram: 3Gb
Video Card: ATI Radeon HD 4600 Series
Before patch 5.0, the game worked fine without problems.