Hi,
When playing Youtube 4K, the video stutter. The YouTube buffer is full, so this is not the issue (the lower grey bar).
I also tried playing local 1080P mkv files (using MPC-HC) and noticed similar issues, but with less effect.
Model nams is: GB-BXi5-4570R, with 8GB RAM, 120GB SSD and fresh install of Windows 8.1
I also installed the latest drivers from Gigabyte website:
http://www.gigabyte.com/products/product-page.aspx?pid=4889#dl (they are 1 year old, are there new drivers somewhere else?).
Would appreciate any suggestions regarding this stuttering issue.