Make the present mode default to Fifo instead of Immediate since it uses

less power and in my own experience is generally a better experience when
the GPU is under significant load.

CHANGELOG.md

@@ -19,6 +19,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Certain NPCs will now attack when alone with victim
 - /kill_npcs no longer leaves drops behind and also has bug causing it to not destroy entities
   fixed.
+- Default present mode changed to Fifo (aka 'Vsync capped').
 
 ### Removed
 

voxygen/src/render/mod.rs

@@ -251,16 +251,13 @@ impl Default for UpscaleMode {
 
 /// Present modes
 /// See https://docs.rs/wgpu/0.7.0/wgpu/enum.PresentMode.html
-#[derive(PartialEq, Clone, Copy, Debug, Serialize, Deserialize)]
+#[derive(Default, PartialEq, Clone, Copy, Debug, Serialize, Deserialize)]
 pub enum PresentMode {
-    Fifo,
     Mailbox,
-    #[serde(other)]
     Immediate,
-}
+    #[default]
-
+    #[serde(other)]
-impl Default for PresentMode {
+    Fifo, // has to be last for `#[serde(other)]`
-    fn default() -> Self { Self::Immediate }
 }
 
 impl From<PresentMode> for wgpu::PresentMode {