Graphical glitches like this one are characteristic of underperforming graphics cards. When my drivers glitched out recently, my BIOS freaked out and defaulted to my integrated card. I had similar issues in just a few games. Also, as far as performance goes, you should be getting more than 30 FPS with that processor. I have and i5 quad core, and it gives me a solid 70 when it starts to chug. This also points to a lack of processing power in your graphics card. Since you have an HP, you're in luck. You should be able to change out the graphics card for $150(? not too familiar with mobile cards) or so, instead of replacing the whole computer. If you absolutely cannot afford a graphics card upgrade, you may investigate a upsampling tool such as GeDoSaTo. It's advertised as a downsampling tool, but it works the other way too, and is specifically compatible with Divinity: Original Sin. If you need more help past that, let me know, and I'll do some experimenting to see if I can get DOS2 running in DX8.
I think it's much more along the lines of this game being in alpha status and thus, the engine doesn't have full support for an obscure graphics card like mine. Just to prove as well that it's not really my card that's freaking out, I've run UT4 plenty of times as well without any of these problems occurring whatsoever. That game is in pre-alpha. Kinda bad performance, sure. Glitched out picture? No. Never. Again, never in ANY of the games I've played on this PC (which are quite substantial now) have I experienced this problem.
And even further, if it really was solely my gfx card that's causing problems, why the hell does it work just fine on the main menu and then freak out during actual gameplay?
Now, I'm pretty sure this laptop isn't going to allow a separate dedicated gfx card, HP or no. Such things are restricted to the very high-end laptops which this one is not. So it's either cough up $700+ or too bad for you, son.
www.pcadvisor.co.uk/how-to/laptop/how-add-graphics-card-your-laptop-3364133/"In most cases, it isn't possible to upgrade a laptop's graphics card. If you want better gaming performance, the only sensible option is to buy a new laptop."
http://www.pcworld.com/article/2923779/how-to-upgrade-graphics-in-a-laptop.html"Before you get too excited thinking you can get another a few years out of your four-pound, thin-and-light gaming laptop just by swapping out the GPU, you probably can’t."
As to upsampling, thank you for mentioning it but I highly HIGHLY doubt that's gonna fix the graphical glitches.
