Tyan 400 Video Corruption with TnT2

[Tweakin]

I'm running a P III 533b and I'm getting intermittent video corruption with the bios settings at default values. It's currently running VIA's latest 4.22 drivers. I have also tried three different sets of video drivers, and they all eventually have the same problem. The video card works fine in another board...is this board a piece of S&#$ or what? I've only used VIA chipsets twice and have had strange problems with both.