Comment by TZubiri

Modern software regularly takes like 1 second to load anyways. 200ms is the minimum human reaction time, so adding 100ms would only add like 50% to the REPL user interaction. Something like 10Hz might be quite usable while minimally contributing to lag.

The idea of having a 60Hz screen is nice, but in practice it turns out that display refresh rate is not the bottleneck for most software.