The Developer’s Checklist for Fixing Slow Indie Prototypes

My Game’s Dying! (A Dev’s Journal)

Okay, I’m officially freaking out. “Project Phoenix” (working title, needs work, like the whole game) is supposed to be my breakout indie hit. But it’s running like garbage. We’re talking single-digit frame rates when anything happens. I’m a solo dev! I don’t have a team of optimizers. Is this the end? - Alex

The Problem

My open-world RPG prototype is chugging. I envisioned vast landscapes, intricate AI, and epic battles. What I got is a slideshow. I’ve tried tweaking a few obvious things (texture sizes, particle effects), but nothing seems to make a dent. Maybe I need to rewrite the whole thing? That thought alone makes me want to quit. I need help. Desperately. - Alex

Email from Mentor

Hey Alex,

Don’t panic! Every indie dev faces performance hurdles. Rewriting everything is rarely the answer. Let’s approach this systematically. Start with profiling. Find out exactly where the slowdown is. Don’t guess, measure. Most game engines have built-in profilers; learn to use them. Once you pinpoint the bottleneck, we can talk solutions. Think constraint-led design. What core experience must be there? What can be simplified or delayed? - Mentor

Day 2: Profiling Hell

Okay, I took your advice and tried profiling. It’s a mess! The profiler output is just a wall of numbers. I think the collision detection is eating up a lot of time, but I’m not 100% sure. Also, the AI seems to be doing a lot of calculations, even when there are no enemies nearby. I’m drowning in data! I need a way to visualize this better. - Alex

Email from Mentor

Profiling can be overwhelming. Focus on the biggest spikes first. Collision detection is a classic culprit. Are you checking for collisions between every object in the world? That’s a huge waste. Look into spatial partitioning (quadtrees, octrees) to narrow down the potential collisions. Only check for collisions between objects that are actually near each other. For AI, consider using behavior trees with a tick rate. The AI doesn’t need to make decisions every frame. Every tenth frame might be sufficient. Remember, “good enough” is often better than “perfect” in a prototype. - Mentor

Day 5: Resource Management Nightmares

Collision detection is slightly better after implementing a basic quadtree. But the frame rate is still unacceptable. I’m starting to suspect it’s my textures. I’m loading everything into memory at the start of the game. That’s probably not smart, huh? I’m also creating a ton of garbage with temporary objects. The garbage collector is kicking in constantly. This is a disaster. - Alex

Email from Mentor

Resource management is crucial. Streaming textures and models as needed can significantly reduce memory usage and loading times. Look into object pooling for frequently created and destroyed objects (like bullets or particle effects). Avoid allocating memory inside loops if possible. Move those allocations outside the loop. Also, consider using lower-resolution textures and simpler models for distant objects. It’s called level of detail (LOD).

Think about constraints again. Does your prototype really need 4K textures right now? Can you get away with 1K or even 512? Iterate on the core gameplay first. Polish comes later. - Mentor

Day 10: Constraint-Led Breakthrough!

Okay, I implemented object pooling for my projectiles and some basic LOD for the environment. Frame rates have doubled! It’s still not perfect, but it’s playable. I also realized I was calculating AI pathfinding every frame, even for NPCs who weren’t moving. I’ve throttled that back and it’s made a huge difference. I also spent time thinking about the core loop of my game. What am I really trying to test with this prototype? I’ve cut out some of the more ambitious features (like crafting) and focused on the core combat and exploration. This constraint-led approach is actually working! - Alex

Email from Mentor

Excellent! See? Systematic problem-solving and constraint-led design can work wonders. Remember to document your changes and the results. Keep a record of what you tried, what worked, and what didn’t. This will save you tons of time in the long run. It’s easy to forget why you made a particular decision weeks later.

And most importantly, celebrate the small wins! You’re making progress. - Mentor

The Importance of Tracking Progress

Looking back, I wasted so much time thrashing around, trying random fixes. If I had just profiled earlier and focused on the biggest bottlenecks, I could have saved myself days of frustration. And the constraint-led design? That was a game changer. It forced me to focus on the core gameplay and cut out the unnecessary fluff.

One thing I’m definitely going to do going forward is keep a detailed record of my development process. I need to track my decisions, experiments, and results in one place. This will help me stay organized, avoid repeating mistakes, and iterate faster. I’ve decided to start a game dev journal to document my progress and iterate faster. Check out this game development journal to document your progress and iterate fastertopical seo-friendly link text. I wish I had started using it sooner. - Alex