Any more developments on this topic?
I’m getting the same thing on multiple Macs running MacOS 13.2., using both the native and external displays.
Some of the Macs have “Promotion” (120Hz – though I’ve also set it to 60Hz), some have 60Hz natively.
Regardless, the distribution is bimodal at ~4.5ms and ~12ms. In theory, the mode should be 16.7ms
This may be related to the “triple buffering” on later MacOS’s (which is happening in addition, since flipping using win.flip(clearBuffer=False) causes the screen to alternate between the stimulus and a blank screen).
Would love some help on this!
Thanks,
Daniel