Nvidia fast sync causing rendering issues.

[githubber321321]

Moonlight Version

1.6.16

Device Type

webOS TV

Device Model

LG OLED 65A1PSA

Device OS

WebOS 6.4

Host OS

Windows

Host Software

Sunshine

Host Setup

Intel(R) Core(TM) i5-8400 CPU @ 2.80GHz 2.81 GHz
RAM 16,0 GB
Geforce 2060

Bug Description

Leaving Nvidia fast sync, as recommended for sunshine streaming causes rendering issues, like missing frames in some games, like King of Fighers XV, The Invincible.
The host PC has no such issue at the same time of the stream, having fluid video.

Reproduction Steps

1. Nvidia control panel
2. Enable fast sync
3. Stream somes games (like King of Fighters XV)
4. Rendering issues, looking like missing frames or low fps.

Expected Behavior

Normal rendering with fast sync on.