RMX1971: Props: enable vsync and disable backpressure

* As seen with December patch some system apps including
user apps started to lag (like screen tearing).
* Enabling Vsync and disabling backpressure resolves the
issue

Signed-off-by: OmarAlCoptan <omarcoptan9@gmail.com>
Signed-off-by: Cykeek <Cykeek@proton.me>