I've red that people tried that in BIOS with that Gigabyte 6850 card and didn't work and only managed to do harm then good...so it's not worth a risk.
that card has the core voltage locked, but if you ask me the last thing I want to temper with is the voltage of a GPU especially while still in warranty.
Reece,
could you post a screenshot of the CCC 3D panel with all the settings?
and have the sliders/settings put the way you've tried it with Trainz.
HunterICX
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