Wild Hearts - optiscaler/OptiScaler GitHub Wiki

Using XeSS causes flickering in ambient occlusion and shadows, regardless of having Auto Exposure ON

Using XeSS or FSR via DLSS inputs will cause rainbow pixels to appear around smoke, dust, and other certain effects. (There’s a way to resolve this below, in the Notes section.)

Using Opti FG causes ghosting/garbling around the HUD elements. Although using FG HUD Fix at +2 value (and beyond) addresses the issue, it also causes the game to feel sluggish in comparison to the default +1 setting

Since the game uses FSR 1, you’ll have to use the DLSS inputs if you want to use XeSS or FSR 2.X.X/3.X

To get rid of the rainbow pixels found in certain effects, you must play the game with Opti FG turned on