Yaapu slow internal update Radiomaster tx16s ELRS

Hi Using Yaapu telemetry widget 2.0.X (6cccb30) and the OpenTX 2.3.15-otx(1004ef7c) on a Radiomaster TX16s with built in ELRS.
The telemetry data show up quite fast in “model screen” telemetry , rolling updates every 1-2 sec. But the update in the Yaapu widget is slow 10-29 sec between updates. What can this be caused off ?