intimidating big guy

My issue: After installing the modified bios, and raising voltage in Inspector to 1.06v (cannot handle at stock the 1202mhz) I now no longer run into my original TDP throttling issue however during gaming of the Witcher 3 (close to 100% GPU load) every 5 minutes I encounter 60-90 seconds of ~80% reduced FPS and audio stuttering as well. This did not happen with the original bios that came with my Dell 980m. My laptop is the Dell M6800. I have isolated the issue to hardware/bios, the issue persists even after a clean OS and software install. Is there a modified Dell 980m bios floating around? Perhaps there is some incompatibility between my motherboard and the new GPU bios. I Have played around with clocks, voltage, power settings, etc to no avail.