Apps randomly closing suggests you are running low on memory (Random Access Memory, not storage). This can happen if you have a very heavy app in the background. If you swipe-hold up from the bottom of your phone, it will bring up a list of open apps displayed as a “card” per app. Swipe each one of these up and away, and then use your phone as normal.

If your phone then behaves for a little while, then starts causing you issues again, close any app you just opened as a potential cause, and see if things improve.

You’ve disabled vsync, but what about gsync/freesync? Both would cap your fps too

Every website you visit knows your public IP address, it is not private information, it is simply a path back to your router.

Don’t panic, there’s nothing to worry about.

To me that doesn’t look like it’s meant to be peeled off. If it has t got a tab, just leave it on there.