> To summarise, the downsides are that it requires more memory, and that it reduces throughput and adds latency (except when there’s already a compositor or a vblank-synced fullscreen display).

https://unix.stackexchange.com/questions/518362/whats-the-do...

I think the extra requirements aren't a problem on modern cards. However on lower end devices e.g. the older intel iGPUs, I could see this becoming an issue.