VR Canvas blurry on Mobile VR

Debug Canvas Layer blurry on mobile.

1. In level Blueprint setup debug overlays (Stat unit/fps, printstring on tick etc)
2. Play in editor to verify console commands are working
3. Deploy to Mobile VR (Go/Gear/Daydream) 

(to repro in 4.20 enable "Debug Canvas in Layer" in Project Settings)

Result: debug layer is blurry / items are located in periphery