Renderer Settings

Open from Edit > Renderer Settings. The dialog exposes two controls: render frame rate and gradient color space.

FPS

Rendering targets the FPS set here. Valid values range from 1 to 60. The default is 60 FPS, which most fixtures accept without banding. Lower values reduce GPU and network load at the cost of visible smoothness on fast-moving effects.

Two reasons to lower it:

• Running on a thermally constrained machine where the fans are audible during a show.
• Sending large pixel counts over Art-Net where the network is the bottleneck. See Hardware Troubleshooting for buffer-size tuning if 60 FPS is dropping packets.

Changes apply immediately and save with the project.

Gradient color space

Selects the color space Spectralite blends in between two gradient stops. The choice shows in every gradient swatch and in the light sent to fixtures.

• Oklch (default): perceptually even, with the hue traveling around the wheel, so a red-to-blue fade stays saturated through purple.
• Oklab: perceptually even, blending straight across the wheel, so the same fade passes through a muted middle.
• Okhsv: perceptually even, holding the strongest channel through a hue rotation.
• Linear sRGB: blends the light itself, which is what two real lights crossfading do. A red-to-blue fade dims through grey in the middle.
• Gamma-corrected linear RGB: the same light blend, re-encoded to sRGB.
• HSL and HSV: classic hue-angle blends.

For xyY and Temp gradients, Okhsv, HSL, and HSV blend the same way as Oklch; they differ only on Channels gradients. A Temp gradient between two whites sweeps in even steps of warmth whatever the space. Switching spaces re-renders every gradient at once, and the change is undoable.

Related

• Hardware Troubleshooting: buffer tuning for large installations.
• Window Menu: the Performance Monitor overlay shows GPU and network timing in real time.