Crashing apps, general lag, and ghost button presses after Marshmallow update

[AC Question]

After the update, the youtube app often crashes within a few minutes of being open. Or, if it doesn't, it will stop the video several times while watching it. Additionally Wechat video calls close within a few seconds after the call is started. Oddly enough, though, they don't end the call. The video disappears, but I can still hear the other person and the other person can still hear me, but the app closes and shows no signs of a call taking place.. Also, if I have an app open, occasionally the screen will change as though a button were pressed, even though nothing was pressed. Very frustrating.
Thanks in advance for your time! I would really appreciate it.

 

[Javier P]

Welcome to the forums! Which phone do you have? Have you already tried a cache partition wipe via recovery mode?

 

[Colt77]

Hey Javier, thanks for the reply. This is the op (it's early in the morning and I couldn't figure out how to reply without an account, so I just made one). I have the Galaxy S6. And I tried the cache partition wipe with no luck :/

 

[Javier P]

Hey Colt, thanks for registering! I'll get in touch with the moderators and see if they can move your thread to the S6 forum for more visibility from other owners.