I have a new Macbook Pro. When watching Youtube videos, it works perfectly until I attempt to watch the video in full screen. When in full screen, the video freezes immediately and the audio continues. When minimized it works fine as before. Help?

Question

I have a brand new Macbook model A1502.  I am taking online college classes that incorporate youtube tutorial videos.  I can watch the videos if I don't maximize the screen to full screen.  When in full screen, the video freezes immediately and the audio continues uninterrupted.  I can press escape and go back to the previous screen and the video continues to play with no problems.  Can anyone help me please?  This machine is literally just out of the box with maybe an hour of use.  Thanks in advance

Answer 1

First, back up all data immediately, as your boot drive might be failing.
There are a few other possible causes of generalized slow performance that you can rule out easily.
Reset the System Management Controller.
If you have many image or video files on the Desktop with preview icons, move them to another folder.
If applicable, uncheck all boxes in the iCloud preference pane.
Disconnect all non-essential wired peripherals and remove aftermarket expansion cards, if any.
Check your keychains in Keychain Access for excessively duplicated items.
If you have more than one user account, you must be logged in as an administrator to carry out this step.
Launch the Console application in the same way you launched Activity Monitor. Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Select the 50 or so most recent entries in the log. Copy them to the Clipboard (command-C). Paste into a reply to this message (command-V). You're looking for entries at the end of the log, not at the beginning.
When posting a log extract, be selective. Don't post more than is requested.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Important: Some personal information, such as your name, may appear in the log. Anonymize before posting. That should be easy to do if your extract is not too long.