See my post here: Battery Life - Windows 8.1 vs 10 | Microsoft Surface Forums
Pretty much sums up my experience with Windows 10 "RTM" and insider updates versus 8.1 on SP3.
Conclusion: It's buggy and battery life as fallen off a cliff.
Edge seems to be a major culprit, and background system services.
A Windows 10 SP3 custom recovery image for those of ours with 8.1 as stock would probably help A LOT. Hello MS.
Pretty much sums up my experience with Windows 10 "RTM" and insider updates versus 8.1 on SP3.
Conclusion: It's buggy and battery life as fallen off a cliff.
Edge seems to be a major culprit, and background system services.
A Windows 10 SP3 custom recovery image for those of ours with 8.1 as stock would probably help A LOT. Hello MS.