Originally Posted by Mike89
I have found a problem using this hotfix. Quake 4 has a patch that enables dual core optimizations. Using the AMD 1.3.1.0 driver and the Microsoft hotfix, Quake 4 (enabling the dual core option in game options) runs a lot slower and has system crashes at some cutscenes. If I either change the Quake 4 "dual core" in game options to "no" (with hotfix installed), or un-install the hotfix (and leave the game setting to dual core), this does not happen. When I say the game runs slower, I mean even the run speed is slower. The walk speed with hotfix un-installed is almost as fast as run speed with hot fix installed.
Maybe this has something to do with the new AMD drivers as it's quite a bit newer than when this thread started. Maybe AMD has already addressed this issue with the drivers and the hotfix is no longer necessary. There has to be a reason why Micosoft pulled it and why AMD has not said to use it.
Also those instructions to remove the hotfix saying that the pmtimer entry also needs to be removed is false. The AMD drivers is what puts that entry there, not the hotfix. At least I know this is true for the AMD 1.3.1.0 driver. Not sure about any previous AMD drivers. If un-installing the hotfix, leave that pmtimer entry alone.