Make use of standardized fluent easing.
MODIFY
WalletWasabi.Fluent/App.xaml
WalletWasabi.Fluent/App.xaml
<Application.Resources>
<x:Double x:Key="ToggleSwitchThemeMinWidth">0</x:Double>
+ <KeySpline x:Key="FluentKeySpline">0.4,0,0.6,1</KeySpline>
+ <SplineEasing x:Key="FluentEasing" X1="0.4" X2="0" Y1="0.6" Y2="1"/>
</Application.Resources>
<Application.Styles>

MODIFY
WalletWasabi.Fluent/Controls/ProgressRing.xaml
WalletWasabi.Fluent/Controls/ProgressRing.xaml
<Style Selector="c|ProgressRing:indeterminate /template/ c|ProgressRingArc.IndeterminateRing">
<Style.Animations>
<Animation Duration="0:0:1" IterationCount="Infinite">
- <KeyFrame Cue="0%" KeySpline="0.4,0,0.6,1">
+ <KeyFrame Cue="0%" KeySpline="{StaticResource FluentKeySpline}">
<Setter Property="(RotateTransform.Angle)" Value="0" />
</KeyFrame>
- <KeyFrame Cue="100%" KeySpline="0.4,0,0.6,1">
+ <KeyFrame Cue="100%" KeySpline="{StaticResource FluentKeySpline}">
<Setter Property="(RotateTransform.Angle)" Value="360" />
</KeyFrame>
</Animation>

Make use of standardized fluent easing.