Windows Extreme lag/music distortion

AutumnLeaves

Greenhorn
I bought this game on gog about two nights ago and I'm experiencing lag/music distortion ever single time I play. I have no mods and I don't play co-op whatsoever but this still happens. I've tried the task manager fix and that hasn't helped at all.

My computer info is

Processor: AMD A8-4555M APU with Radeon (tm) HD graphics 1.60 GHz
Installed RAM 8.00 GB (7.19 usable)
System type: 64-bit Operating system, x64-based processor
hp-laptop

I've tried what I could/understood, but I have 5 hours in game (mostly trying to fix this), so I can't even get a refund by this point. I apologise if this isn't the place to post this.
 
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