Answer to: iPad Pro 12.9 touchscreen is unresponsive from time to timeOkey, seems on my end it was a hardware issue (I tried hardware reset, disabling iPad features, removing apps - nothing helped. It looked like it helped but then touch delays were getting back). Apple replaced the iPad and all my problems went away.
Answer to: iPad Pro 12.9 touchscreen is unresponsive from time to timeSo I think I mostly fixed this on my side. Previously I wrote that removing Smart Cover worked but I still was experiencing unresponsive moments. And it was getting worse with time. There’s almost no issues after I did the following: 1) Updated to iOS 11.3.1 - that helped a bit. Apple wrote it fixes an issue with the screen, maybe it improves iPad behavior as well. I’m not sure but my impression it does help. 2) Removed Facebook app (it helped with battery life at least) 3) Went to Background App Refresh and disabled almost all applications in there. I think disabling everything helps a lot! But I need at least Mail and a couple of others. Using this config second day in a row and there are still random unresponsive moments but only a few of them. I have Bluetooth enabled, Apple Pencil connected and Smart Cover as well. My iPad is still under warranty, I’ll wait more to see if it’s a software issue in the end and if it gets worse will go to Apple Service. It was a very annoying experience lasting three months...
Answer to: iPad Pro 12.9 touchscreen is unresponsive from time to timeI tried all solutions in this thread - nothing helped. After that I realized on my side the problem is connected to the Smart Cover. When I connect Smart Cover I have all sorts of problems with unresponsive touch. When I disconnect Smart Cover it works just fine!