Amnesia runs with low FPS no matter what I do

[LaggNinja]

I have checked troubleshouting guide and I have done everything it says there to improve FPS however I still run low FPS.

Now I can endure it when playing normal as I get roughly 20 FPS, I get killed all the damn time because the movement of screen is slow and I can't control doors and such properly because of that but it's manageable

Problem is I want to record it and when I do I fall at a max of 16 FPS which as you can guess is virtually impossible to play on and much problematic when trying to record.

I was wondering if there was a mod or file or something I could use to improve the framerate sort of like Chris's config for TF2. Can anyone help?

System Specs: (Note I'm not computer savvy so all this is pure gibberish to me)

Operating System: Windows 7 home edition (64bit)
Graphics card: ATI Mobility Radeon HD 4200 Series
Processor: AMD Athlon™ II P320 Dual-Core Processor
Ram: 4GB

If you need more info tell me where to get it. thanks