# 8.3.4 Siemens Enhanced Driver constantly loses connection

**URL:** <https://forum.inductiveautomation.com/t/8-3-4-siemens-enhanced-driver-constantly-loses-connection/115076>\
**Category:** Ignition\
**Tags:** perspective\
**Created:** [April 15, 2026, 6:54am UTC](https://forum.inductiveautomation.com/t/8-3-4-siemens-enhanced-driver-constantly-loses-connection/115076 "2026-04-15T06:54:35Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![m.pelagatti](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/m.pelagatti/32/68595_2.png) [@m.pelagatti](https://forum.inductiveautomation.com/u/m.pelagatti)\
**Post date:** [April 15, 2026, 9:33am UTC](https://forum.inductiveautomation.com/t/8-3-4-siemens-enhanced-driver-constantly-loses-connection/115076/2 "2026-04-15T09:33:28Z")

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Hi, I don't have disconnections every minute with enhanced siemens driver 8.3.4, but I continuously have clock drift detected, and let's say that I often have delays in reading the tags, like post :

> [@Siemens Enhanced Driver Refresh Browse fails](https://forum.inductiveautomation.com/t/siemens-enhanced-driver-refresh-browse-fails/114536/9):
>
> Upgrading to 8.3.4 seems to have fixed this issue, thank you!

I have about 17,000 tags, divided into the tag groups below. The tags that don't require continuous updates have refresh rates of 8,000 ms.  
I didn't use leased tags group because switching rates from slow to fast isn't possible. The delay with leased tag can be several seconds, and when I enter the page, I can't wait, say, 10 seconds for the tags to start updating, Therefore, all the underlying groups are directly subscribed.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/6/f/6feab843651083e9762ef545644203fcd37eb76e.png)

In this situation, I find that the tags aren't always refreshed at the entered rate, and I have clock drifts that indicate a delay.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/8/88b1a43f76cc383393d2ff00b59aed044655dac4.png)

Do you also experience these delays, in addition to the disconnection?

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