Quick answer: A fixed (capped) frame rate locks the game to a set FPS for consistency and lower power use; an uncapped frame rate renders as fast as the hardware allows, maximizing smoothness but using more power and risking inconsistency.

Whether to run your game at a fixed (capped) frame rate or let it run uncapped is a real performance decision, trading consistency and power against peak smoothness. Here's the comparison and how to choose.

What a Fixed Frame Rate Offers

A fixed frame rate caps the game to a set FPS (say 60), regardless of how fast the hardware could go. Its benefits are consistency (a steady, sustainable rate often feels smoother than one that fluctuates) and lower resource use (capping reduces CPU/GPU load, heat, and battery drain, important on mobile).

A fixed rate also avoids bugs from runaway frame rates in games with frame-rate-dependent logic. Bugnet's performance data helps you pick a cap devices can sustain. The trade-off is that a fixed cap leaves performance on the table for players with high-refresh displays who could enjoy more.

What an Uncapped Frame Rate Offers

An uncapped frame rate renders as fast as the hardware allows, maximizing frame rate on capable hardware. Its benefit is peak smoothness for players with high-refresh displays (120Hz+) who can see and want the extra frames. For competitive or fast-action games, uncapped high frame rates can be a real advantage.

The costs are higher power use, heat, and battery drain (rendering far more frames than needed wastes resources), potential inconsistency (frame rate bouncing around), and possible runaway-frame-rate bugs. Uncapped maximizes the ceiling but at the cost of efficiency and sometimes consistency.

Which to Choose (Often a Cap With an Option)

The common best answer is a sensible default cap with an uncap option. A default cap gives consistency and efficiency for most players and hardware; the option to uncap or raise the cap respects players with high-refresh displays who want more. This serves both without forcing either on everyone.

Bugnet's performance and thermal data helps you set defaults that work across hardware. So rather than a flat choice, lean toward a fixed cap by default (especially on mobile, for power and consistency) while offering an uncapped or higher option for capable hardware, balancing efficiency and consistency against peak smoothness.

A fixed (capped) frame rate gives consistency and lower power use; an uncapped rate maximizes smoothness on capable displays but uses more power and risks inconsistency. Offer a sensible default cap with an uncap option.