Okay I had to reopen this feedback because it happens again and more frequent than ever before..

as you mentioned, high latency is exclusive to lens, especially forum lens. All the other lenses, including custom ones, work just fine at one go. Forum lens however does not work at first/second try or even not at all.
It's really frustrating yet I have no way to reproduce this reliably. If there is something I can do I'll be glad to.
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