Microsoft have recently identified issues with high cpu and high memory usage in certain Windows 10 builds (1703 isn't affected... Yet. ).
Builds which are affected are: Windows 10 version's 1607, 1511, and 1507.
Apparently this is down to recent updates which are named in the quote's below...
build 1507
build 1511
build 1607
build 1703
configuration manager
high cpu
high memory
it support
kb4022715
kb4022723
kb4025339
kb4034658
metadataprocessing
microsoft
performance issues
ram usage
system update
update tuesdays
windows 10
wsus