View Full Version : Jerkiness - fixed by clicking OUTSIDE the Trainz window!

September 26th, 2018, 01:22 PM
I have logged this as a bug but just wanted to report it here as well. Maybe others are not getting this issue:

When running TRS19 in a window while watching a moving train (from outside the train), there is considerable jerkiness/stutter and dips in FPS anywhere from 30 to 22 FPS. However when the mouse is moved outside to another monitor and I click on another application (e.g. Firefox) or on the desktop outside the Trainz window, the the FPS and jerkiness immediately go away and the train can be seen to move smoothly - and the FPS stays at a constant 30 FPS.

I suspect that this must have something to do with Trainz monitoring the user for input inefficiently somehow.

In full screen mode I still get the same jerkiness and low FPS, however I cannot replicate the issue because you have to alt+tab which minimizes Trainz. But I think the same is going on in full screen mode as well.

If Trainz ran the way it does when the window was not in focus I would be quite happy! :udrool:

September 26th, 2018, 01:37 PM
Seems the issue is fixed as soon as I set the NVIDIA control panel option 'Monitor Technology' to ULMB.

September 26th, 2018, 03:39 PM
Seems the issue is fixed as soon as I set the NVIDIA control panel option 'Monitor Technology' to ULMB.

I don't have "Monitor Technology" on mine. Where do you see that?

September 26th, 2018, 03:44 PM
I think you need to have a monitor which supports NVIDIA G-SYNC, and set it to a high refresh rate then set the option:


September 26th, 2018, 04:04 PM
This is actually a G-sync problem and not TRS19.


and here: