If you are correct then that's a bit of a pain, as I doubt if Samsung are going to create a new driver just for me!
AMD now releases Radeon drivers directly for mobile GPUs. They don't work on all laptops, but you can try it.
http://support.amd.com/us/gpudownload/Pages/index.aspxYou could also try:
1. Uninstall the Sony provided GPU drivers completely.
2. Reboot. Let Windows install the default drivers.
3. Reboot again. (NOTE: DO NOT SKIP ANY OF THE REBOOT STEPS)
4. Try it out. Does it work? Is it different?
5. Install the Sony provided drivers again.
6. Reboot.
7. Try again.
I'm not sure that's the problem, but it isn't a widespread issue, and that machine should be plenty powerful enough for Red October Standard. It works on Atoms, much less Sandy Bridge Core i5s (even mobile ones). So, the core answer to your question is: No. It isn't too underpowered. There's something else wrong.
You could try uninstalling MC (choosing the option to remove all settings) and reinstalling, and start with default settings if you want to confirm you didn't mess something up. Make a Library Backup first (the Library Backup also contains all the settings, so you can always restore them later if it doesn't help).
Other potential problems could be:
1. Disk trouble (do CHKDSK for errors).
2. Incredibly slow disk access (is the stuff on a USB or Network drive that might be flaky)?
3. Failing hardware (a bad GPU could result in stuff like that). Does Theater View work right? Does the machine pass a test in 3DMark?
4. Some conflicting piece of software (maybe anti-virus or other security software)?
None of those are likely candidates (I think the GPU driver is much more likely), but they're possible.