I didn't bro because I wanted to keep the VOLTE.
Maybe you try wiping the cache partition of the phone, steps below. Watch out you don't wipe out the entire data. It may help resolve your problem hopefully.
Steps To Wipe cache partition
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1. Turn off your device.
2. Press and hold the Volume down and Power button at the same time.
When the OnePlus logo appears, release the Power button, but continue holding the Volume down button.
3. At the Password screen, enter the Password or PIN number that you use to unlock your device. When done, tap Ok.
4. Tap English.
5. Tap Wipe data and cache.
6. Tap Wipe cache.
7. Tap Yes to continue.
8. Tap Reboot to restart the phone.
Bro ,thanks for the advice ,actually I did this all before start use the phone last night (but is before update the OTA),don't know whether is the OTA cause this.will try again..

and i can say using the touchscreen test app to test, all of them got such issue, and i also experience serious issue typing (lots of typos) which i dont experience on my current set.