I've encountered near identical issues to the OP with my 880m GPU and upgrading from Prema's P150SM-A BIOS v01 to v02. Would it possible to know what the solution to this problem was i.e. in the PM Ethrem sent to ZeroX03? The following are the steps I took in relation to this issue: In short, I found the only solution was to downgrade back to Prema v01 BIOS for the P150SM-A. I kept the NVIDIA 880m svl7 modified vBIOS though. I would very much appreciate any clear explanations behind why this stuttering occurs with Prema's v02 BIOS and not v01 in the above scenario, and any subsequent solution. Many thanks!