If call centres are anything to go by, it will be penalized to work on a single thing at once. The longer your workplace can resist measurements related to agents, the more sane the workplace will remain IMO, otherwise, it will turn into what happened to call centres around the 2000s. Measure everything down to the second, and introduce expectations that you will need to spend time justifying if you miss them.

I main Deepseek Flash and the biggest bottleneck often isn't the model itself, its external stuff like compilation, testing things, making requests, running linters

The bottleneck is not only the model latency, Although it would help.

When you compile an ios app, or wait for some query result, search slack or wait for Github CI to finish, it all introduces significant wait between agent turns.

Models getting faster would help but would not eliminate the problem.