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Comment by lwouis | Hacker News Reader

> it's pretty sluggish for me

Did you take into account the 200ms that's purposefully added? The behavior of alt-tab on windows is also: if you press fast (within 200ms) you don't get a UI but the switch will happen. After holding alt for > 200ms, the UI is displayed. Taking that into account, does the UI display after a delay significantly longer than 200ms? Please open a ticket if it does, with your hardware specs.

> It also doesn't seem to support any form of drag-n-drop

That's a great idea! Please open a ticket

> Nor does it seem to support command-H/Q, or play well with Spaces.

There are 2 tickets opened currently for these 2 things. Hopefully they get implemented soon

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>if you press fast (within 200ms) you don't get a UI but the switch will happen

I always get the UI, no matter how fast I press the keys (W10 1903). This may have been different on previous versions.

XP and 98SE (I just started a VM to check) also don't have any delay, so I suspect that those who are seeing one are just experiencing some natural sluggishness rather than a deliberate delay.

Indeed I tried and even though I can get a switch without any frame of UI showing, it is very hard to press and release fast enough. It's not a delay like I implemented, but most likely the UI being terminated before the next frame, so nothing shows.

In any case, adding a preference to change/remove the delay will satisfy people who want the UI to show faster (https://github.com/lwouis/alt-tab-macos/issues/8)

1-2 seconds is 5-10 times longer than 200ms, so it's probably not that.

Could you possibly open a ticket for this performance issue? If you attach OS version, hardware specs, system load, it may be possible to reproduce and get to the bottom of this. Another strategy would be for you to try HyperSwitch (https://bahoom.com/hyperswitch) and see if that one is also slow (you can change the activation delay to 200ms to match, and play with thumbnail quality and see if that impacts perf).

I worked a lot on the thumbnail generation which was making the app slow on my setup. I thought the perf is good enough, but it looks like not enough

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