Ah, that's what you mean, makes sense.

I had the same experience on robosats with phoenix wallet and I think both use the same code.

I think in this case here, it's just my server being slow.

Stacker Saloon

saloon

ofc I know how hold invoices are working. 
I was playing with a phoenixd node too (not phoenix wallet), using robosats hold invoices.
And the failure rate was way more higher than with other LND/CLN nodes.

So then I tried to avoid using phoenixd / phoenix wallet with hold invoices.
I think is related with the CLTV, maybe you could try a larger CLTV.