(Gloud Games / 格来云游戏) Witcher 3 (PC): Swim, Dive, Underwater and Drowning Geralt.

Unequipment tutorial: XBOX (Gamepad) Method 2
1. Press Start to Menu and Press a to Inventory menu.
2. In Human equipment selected then Press A to unequipment (Shirt, Short, Shoes, Hands, etc) Also unequipment weapon like sword (repeat step 2).
3. Then Press B and B button to Back to game and Play underwater.

Game Info for Gloud Games:
Title: The Witcher 3: Wild Hunt
Genre: Action RPG > Open World
Type Cost: SVIP (30 days for 3200 Gold | 1 day for 799 Gold)

NOTE: if you Slow buffering streaming connection will too weak and Reconnection again.

My device info:
Android 7.0 (Huawei P7 Lite)