Player jitters when running client/dedicated server in 1.4

I have a problem that the player and Kork the NPC, jitters when running in client/dedicated server using TG 1.4, that is not evident in TGE 1.3.

After some investigation, I have found something odd with the timing.

In TGE 1.3 platform\winWindow.cc there is

void TimeManager::process()
{
   TimeEvent event;
   event.elapsedTime = gTimer.getElapsedMS();
 
   if(event.elapsedTime > 2)
   {
      gTimer.advance();
      Game->postEvent(event);
   }
}

Now in the same function in TGE 1.4 its defined as

void TimeManager::process()
{
   TimeEvent event;
   event.elapsedTime = gTimer.getElapsedMS();
 
   if(event.elapsedTime > sgTimeManagerProcessInterval)
   {
      gTimer.advance();
      Game->postEvent(event);
   }
}

ok, see the sgTimeManagerProcessInterval?? thats new to 1.4. So I track that guy down and find the following in platform.cc

S32 sgBackgroundProcessSleepTime = 25;
S32 sgTimeManagerProcessInterval = 0;
 
void Platform::initConsole()
{
   Con::addVariable("Pref::backgroundSleepTime", TypeS32, &sgBackgroundProcessSleepTime);
   Con::addVariable("Pref::timeManagerProcessInterval", TypeS32, &sgTimeManagerProcessInterval);
}
 
S32 Platform::getBackgroundSleepTime()
{
   return sgBackgroundProcessSleepTime;
}

The thing to note here is what the default is set to ZERO so if you dont know about this pref setting and leave it, it defaults to zero, which is not the same update rate as in the TGE 1.3 which is 2.

Lastly, I thought I would also check out where sgBackgroundProcessSleepTime is used. Again I found out the value that is passed at the same places in in TGE 1.3 is 100, where as shown above for 1.4, the default is 32.


So from what I have found, the defaults should be changed to match TGE 1.3 values, or you can change it in the pref file if you are aware that you needed to change it

S32 sgBackgroundProcessSleepTime = 100;
S32 sgTimeManagerProcessInterval = 2;

I will do more testing when I get on my home system as thats where I see the jitters the most, but I have noticed an improvement on my current test.

The reason I think my home system shows the jitters more, is because it's a 3ghz where as the one I am on atm is 2ghz so the updating is even faster at home causing the jitters.

Edit: Misstyped a code block closing