MacBook Pro 2019 Touch Bar lagging when Changing Volume I have a 2019 MacBook Pro 15 inch with touch bar. I change the volume a lot when watching youtube videos. This makes the Touch Bar lag and then crash. 

This has been a major issue since I was listening to songs through iTunes and the Touch Bar lagged off while I was changing the volume. Just to try to get it to respond I tried increasing it the max and min. The volume throttle didn't move so I assumed it wasn't responding. But after about 2 minutes music was played at full volume.

Is there any way I can reset the Touch Bar just like I have the ability to reset NVRAM. I am aware that the touch bar is totally controlled by T2 chip. So I think resetting the T2 chip will most probably solve the issue.
I’ve had issues with my touch bar too. (See Touch Bar not turning on after waking computer from sleep.)

Here are some things that didn’t work for me, but they might work for you:


Open Activity Monitor, find and select TouchBarServer, then press the Stop button. Then select Force Quit. It should restart automatically and your touch bar should be back to normal speed and responsiveness.
If step 1 doesn’t work, try resetting your SMC:
https://support.apple.com/en-us/HT201295
If step 2 doesn’t work, try resetting your NVRAM/PRAM:
https://support.apple.com/en-us/HT204063