Computer stutters when watching Netflix/HBO

[apkochheiser]

So on my second PC, Ive noticed something thats never happened before yesterday. When Im watching videos on Netflix or HBO, my entire computer stutters once every few seconds. I can game and watch YouTube videos and Twitch just fine, but Im lost as to the cause of it all.
Specs:
8GB RAM
i5 4460
Radeon R9 380 MSI
ASROCK Mini-ITX MOBO
1TB Seagate HDD

 

[Calvin7]

i5 4460
Supported memory: DDR3-1333, DDR3-1600
Memory should be set to memory manufacturers specifications.

Inadequate power supplies can cause a variety of symptoms.

Most obvious one would be a slow internet speed.
Internet Connection Speed Recommendations
• 0.5 Megabits per second - Required broadband connection speed
•1.5 Megabits per second - Recommended broadband connection speed
•3.0 Megabits per second - Recommended for SD quality
•5.0 Megabits per second - Recommended for HD quality
•25 Megabits per second - Recommended for Ultra HD quality

 

[apkochheiser]

i5 4460
Supported memory: DDR3-1333, DDR3-1600
Memory should be set to memory manufacturers specifications.

Inadequate power supplies can cause a variety of symptoms.

Most obvious one would be a slow internet speed.
Internet Connection Speed Recommendations
• 0.5 Megabits per second - Required broadband connection speed
•1.5 Megabits per second - Recommended broadband connection speed
•3.0 Megabits per second - Recommended for SD quality
•5.0 Megabits per second - Recommended for HD quality
•25 Megabits per second - Recommended for Ultra HD quality

Well its not internet speed Im running at about 70mbps, and I get zero latency. Its more of just straight lags in my entire OS, like the mouse freezes, when Im typing it freezes, etc.