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May 24, 2026Stable Baselines3 VecEnv Reset Bug: 100K Step Desync Fix
The Bug That Only Shows Up After 100K Steps Your PPO agent trains perfectly for 100,000...
May 24, 20261 min read0 reactions0 comments
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May 24, 2026RLHF in 2026: Why Human Feedback Still Beats Pure AI Alignment
The DPO Hype Promised to Kill RLHF — It Didn't Everyone said Direct Preference...
May 24, 20261 min read0 reactions0 comments
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May 26, 2026PPO vs SAC: 1-GPU Memory & Compute Cost Benchmark
SAC Uses 40% More VRAM Than PPO on the Same Task I expected PPO to be the memory hog. It...
May 26, 20261 min read0 reactions0 comments
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May 27, 2026CleanRL vs Stable Baselines3: PPO Training 2.3x Faster
CleanRL Beats Stable Baselines3 by 2.3x — But There's a Catch I spent a week training PPO...
May 27, 20261 min read0 reactions0 comments
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May 13, 2026PPO vs SAC Sparse Rewards: 3x Sample Efficiency Gap
The 500K Step Wall Most RL tutorials show you CartPole with dense rewards every step. Then...
May 13, 20261 min read0 reactions0 comments
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May 4, 2026PPO Entropy Decay Bug: Why Exploration Dies at 500K Steps
The Bug That Killed My Agent at Step 523,000 Your PPO agent trains beautifully for 500,000...
May 4, 20261 min read0 reactions0 comments
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Apr 26, 2026On-Policy vs Off-Policy RL: PPO vs SAC on 5 Gymnasium Tasks
The Counterintuitive Truth About Sample Efficiency SAC should destroy PPO on sample...
Apr 26, 20261 min read0 reactions0 comments
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Apr 13, 2026PPO vs A2C: CartPole Training Speed & Sample Efficiency
Why A2C Often Trains Faster Than PPO (Until It Doesn't) Most RL tutorials pick PPO as the...
Apr 13, 20261 min read0 reactions0 comments
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Apr 2, 2026PPO vs DQN: Discrete Action Spaces Beat Continuous 3x
Most RL Tutorials Get the Algorithm Choice Backwards Pick DQN for CartPole. Pick PPO for...
Apr 2, 20261 min read0 reactions0 comments
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Mar 30, 2026On-Policy vs Off-Policy RL: When PPO Beats SAC
Why PPO Dominates Sparse Rewards (But Fails at Sample Reuse) PPO converges in 500K steps...
Mar 30, 20261 min read0 reactions0 comments