Game Development

Game Development Bug Report

Unity Rigidbody character jitters with camera follow: Update vs FixedUpdate

Daniel Tran · Jun 23, 2026 · 9 min read

Our player character stuttered against the background whenever the camera followed it, worst on 144 Hz monitors. Movement wrote the transform in Update, the camera read physics positions, and interpolation was off. How we measured the jitter and fixed all three.

Databases Bug Report

100 rare items, 140 players got one: a read-then-write race when thousands claimed at once

Le Minh Khoa · Nov 6, 2025 · 7 min read

Our game released 100 limited items at 20:00, and about 20,000 players tapped claim within seconds. 140 players received one. The endpoint checked remaining stock, then decremented it separately. How we proved the race and fixed it with an atomic conditional update, a constraint and a Redis gate.