This page describes known problems and fixes for Darkest Hour/Red Orchestra, excluding crashes. For crash fixes, see this page.

Validating Caches

Click on the links to validate your Red Orchestra and Darkest Hour caches.

= Keyboard Movement Lag = Some users have described a “movement lag” that involves pressing a movement button and experiencing a delay before your player actually moves, or your player continuing to move for a short time after you let go of the movement key (greater delay than a realistic stop). Following the instructions in the Decrease Load Times tutorial helps eliminate keyboard movement lag.

In addition, background services such as Avast Antivirus or other CPU hogs are known to cause keyboard lag. To check your background services, press [CTRL] + [ALT] + [DEL] to start the Task Manager (In Windows Vista, you will have to click Start Task Manager after pressing those keys).

Select the Processes tab at the top to view what processes are running in the background. This window also displays how much memory and CPU is being used by each process. Clicking on a process and clicking the End Process button will end the process, but you should consult someone in the Medical Office before ending a process with a name you do not recognise.

= Video Problems = Sometimes a problem is serious enough that you can’t even start DH up, so the video driver needs to be changed manually.

Open up in Notepad. (Immediately save a copy as , in case something goes wrong.) You will see a section that starts with this: that contains these lines:

Each line that has a semicolon in front of it has been commented out (i.e. turned from a command to a line that the program ignores). The single line without one is the currently used driver. To switch video drivers, simply remove the semicolon from one of the other lines that start with and place one in front of the current one that doesn’t. It is very important that only one line is uncommented; no more, no less. There are also other lines that start with , but don’t try to uncomment them.

Save the file and try to restart DH. If it won’t start up, try a different driver. If it doesn’t work with any of them, post your problem in the Medical Office.