AUM Lags after iPad update

[John Hair]

Ever since updating my 11” 4th generation iPad Pro to iPadOS 26.2, AUM (playing SWAM instruments) seems to lag when playing a note. 

I’ve read some posts about iPads being slower after the update, so I don’t know if this is the iPad that needs adjustment or AUM or SWAM.

Anyone else experiencing this?

[Ben Green]

Have you updated the Bluetooth firmware on your DM48x?

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[Klaas]

Is the  DM48x the only device connected to the iPad and vice versa?

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[John Hair]

I hadn't planned on updating the Bluetooth firmware because I don't use Bluetooth. Maybe that's the solution. The DM48X is the only device connected to the iPad and the iPad is the only device connected to the DM48X.

[Erik L]

I am surprised you have a persistent connection at all, as connections have typically dropped after about 20 seconds when using iPadOS 26.x. 

I would update the bluetooth firmware (see separate post with instructions), and also ensure that buffer size is minimized in SWAM (if running standalone) or in AUM (when running SWAM in AUM).

The buffer makes a big difference, and the default SWAM buffer is way too large. In particular, the combination of BLE MIDI and large buffer results in a noticeable latency.

BLE MIDI is a tad less responsive than USB MIDI, but as long as the buffer is minimized it’s very playable - although the lowest possible latency is achieved with USB MIDI + small buffer.

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