I've heard of the silicon lottery, but is there also an "Optimus lottery"? I'm just surprised that I haven't really had issues with micro-stuttering (yet, at least?) given so many others here have, and I wonder if there's some setting that I (or my reseller?) inadvertently activated or deactivated that has helped with it for me... I will say that my dGPU doesn't really come on much... usually just when I'm gaming or have a benchmarking or monitoring program open... otherwise my iGPU is doing all the work, there doesn't seem to be much unexpected switching between the two GPUs. I have no idea about #2... doesn't sound right though Does it only happen when the dGPU is on and/or the dGPU fan is on? As for #3, that's definitely not right... I have to run a CPU stress test like Prime95 to get my CPU to be consistently at 100%. Sorry I didn't quite catch what you meant about a Win10 fresh install - have you already tried a Win10 fresh install and you're having this problem, or is a Win10 fresh install something you're considering to help fix it?