Its a GeForce GTX TITAN
Trainer works just fine for me on a 1070 and I can play on ultra settings for hours with no issues. The vram on your card could be failing, could be it's getting too hot and need a cleaning or a thermal re-paste. Could even be geforce experience or a setting in it, Ansel has been known to cause vram issues. Maybe you over-clocked too high. Could be many things but I highly, highly doubt the trainer causing it.