RAM could be an issue, but you can get the Pro8 with up to 32 GB. Also, a simple TSC7 can visualize SX12 scan data in Access, so I doubt that it is a memory problem. It might be running slow, but it shouldn't fail to visualize it. Sounds more like a driver, graphics mode issue.
I highly suggest switching to OpenGL in the TBC -> options (tick override automatic detection). When working with point clouds the release notes state that you should use that. After changing it in TBC you need to restart TBC, otherwise that setting doesn't take effect.
You don't need to install a different driver. The Intel Iris Xe GPU does support OpenGL (wouldn't know a modern GPU that doesn't).
https://www.intel.com.au/content/www/au/en/support/articles/000005524/graphics