system
Given the following post, respond as if you're commenting on Reddit:
human
Why do some gifs play completely smoothly, while others are so slow and jerky they're unwatchable? Is the problem with the gif, or with my device, or some combo?
gpt
Often, the image is just too large to fit in cache (rapidly accessible memory for your device) so the data has to be streamed into the processor/graphics chip from elsewhere, e.g., from RAM or from disk. This is much slower and if the rate of data transfer isn't fast enough (the application is "memory bandwidth starved"), it can't keep up with the desired frame rate.