Steam Locomotives crashing the game when they reach a certain speed.

I have been having an issue with some of the steam locomotives I have installed crashing the game when they certain speed and the speed this happens varies between locomotives.

The locomotives I have had this problem include the Trainz Italia Challengers(although I was able to fix them by just supplementing their engine specs with the Big Boys but it doesn't seem to work with the other locos having this problem), ANL's TTT-6s and CSA-2 Challengers, and both variations of Auran's C&O H8s. But it won't usually happen on blank baseboards, the routes I have tried it on include Kickstarter County, Legacy of the BN, Coal Country, Mojave Subdivision, and Cajon Pass Extreme

Here is a recording I have of the crash in action with one ANL's CSA-2 Challengers:

Everything I have tried to fix it:

• Uninstalling and reinstalling the locomotives
• Extended Database repair
• Lowering graphic settings.

Here's my system specs:

Processor: Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz (4 CPUs), ~3.3GHz Memory: 8192MB RAM
Available OS Memory: 8174MB RAM
Page File: 7248MB used, 9117MB available
Windows Dir: C:\WINDOWS
Card name: NVIDIA GeForce GTX 970
Manufacturer: NVIDIA
Chip type: GeForce GTX 970
DAC type: Integrated RAMDAC
Display Memory: 8145 MB
Current Mode: 1920 x 1080 (32 bit) (60Hz)
Monitor Name: Generic PnP Monitor

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