I'm seeing similar behavior on my TCL 55UP130 Roku TV.
For me, the TV locks up when I hear the popping noise. It is completely unresponsive for maybe 30-45 seconds, after which it does a full restart. This happens randomly throughout a viewing session, but only if I have headphones plugged into the remote. This happens regardless of the application I am using.
Have you tried contacting TCL support yet to inquire further? I'd suggest starting there to see what options or suggestions they can provide. Each Roku TV manufacturer provides direct support for their products running the Roku OS.