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Date/Time: Wed, 15 Apr 2026 23:08:00 +0000



Post From: EUREX DOM freezes every ~5 seconds (1–2s lag) despite low chart draw time

[2026-04-01 08:15:09]
User197029 - Posts: 64
Thank you.

The clock in the Sierra Chart title bar does not stop when this happens. It continues updating every second.

For additional context, I have now also enabled the Sierra NTP client properly, and Sierra has permission to set system time. The log shows only very small clock adjustments, for example around -2.6 ms and +10.7 ms, with packet offsets around 9 to 13 ms, so local clock mismatch should no longer be a factor.

I have also enabled the DD field in the chart header. What I am seeing there is that the minimum is around 00:00:00.500, but at times it spikes much higher, for example around 10 seconds, then around 4 seconds, and quite often around 2 seconds.

I am looking at June FESX.

I am not sure whether those DD spikes are meaningful on your side, but I thought it may be useful information for your checks.

It was working ok yesterday so not sure why this is happening. My internet speed is 150mb