You should also disable XMP, at least while troubleshooting. XMP speed is a somewhat common cause of 'random' crashes with games. Particularly with the more system intensive titles as they use more RAM.
You can't assume XMP is stable without testing it at default to verify (memtest may not flag crashes caused by XMP speed). 4800MHz is top DDR5 non-OC\XMP speed, so 7200MHz is a big XMP\OC. If you are using four sticks instability is more likely @XMP as well.
- *"No excessive heat"*, but what are your cpu and gpu temps when the machine crashes ?
- With new release gpu's I reckon using the latest driver is generally going to be the best option as driver optimizations are mostly about addressing issues with the new series gpu's.
- 1TB vs 2TB SSD won't cause any issues. Motherboard mfg's don't test every available SSD or RAM for their compatibility list.
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