Intel series 4 display adapter: optimum settings?

I'm working on a Toshiba Satellite L505, 2.10ghz Intel Core 2 duo t6500, 4gb DDR3 ram and the Intel Series 4 display adapter/graphics card.

I am an artist and have been doing some digital art that has started to bog my computer into "break it out of anger" slug-pace.

in photoshop cs4, everything runs well for a while but i have a few big working files (357mb) that kill my computer. i can't finish the painting because the lag is too much to overcome.

I started playing with Scultris, a fairly lightweight digital sculpting program. barely into any progress, it becomes unusably bogged down. In processes, it runs less than 100,000k, light by most other program standards. yet it is still maxing out my CPU>


what settings can I change to make it more optimal for what I am doing? Sculptris forum suggested optimizing my graphics card settings but I am not sure how.

Are there other things I can do to increase performance?

Thanks.

oh and here's some info if it helps:

Intel(R) Graphics Media Accelerator Driver for Mobile Report


Report Date: 02/11/2013
Report Time[hr:mm:ss]: 01:51:52
Driver Version: 8.15.10.1883
Operating System: Windows 7 Home Premium* , Service Pack 1 (6.1.7601)
Default Language: English
DirectX* Version: 11.0
Physical Memory: 3963 MB
Minimum Graphics Memory: 128 MB
Maximum Graphics Memory: 1759 MB
Graphics Memory in Use: 58 MB
Processor: Intel64 Family 6 Model 23 Stepping 10 GenuineIntel
Processor Speed: 2094 MHZ
Vendor ID: 8086
Device ID: 2A42
Device Revision: 07