If it's been less than 10 days, you can try to get back to the version of Windows before Anniversary. But Windows 10 Anniversary isn't your problem. Your problem is you used Acer Care Center to update to the Turbo Boost driver 11.0.0.1146....a.k.a. Intel Management Engine interface driver 11.0.0.1146. Which is Acer's fault. They never should have had that Turbo Boost driver update available for you....and should have removed that driver for Haswell-ULT.
Going back to the previous version of Windows 10 might give you your Windows 8.1 Intel MEI driver back.....this will hopefully undo your Acer Care Center Turbo Boost driver 11.0.0.1146 update.
