Support Board
Date/Time: Wed, 19 Mar 2025 16:58:24 +0000
Strange lag when scrolling chart (only when viewing specific time period)
View Count: 981
| [2022-10-17 15:34:38] |
| MarkusK - Posts: 104 |
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Hi, I noticed a very strange issue today which is unfortunately quite hard to describe: When I scroll my chart within a specific time period it's very slow and laggy. Strangely, this only happens when a specific time period is visible in the chart (to be precise today after 10:50 New York Time in the ES). When I scroll the chart to the left (so that none of the bars after 10:50 are visible anymore) everything is perfectly fine and smooth. However, as soon as I scroll to the right and the bars after 10:50 get into view, Sierra instantly becomes very laggy and almost unusable. I attached screenshots of my two charts in which this is happening. It seems that this issue is somehow related to the Numbers Bars study which I am using in both charts, because I don't have this issue in any of my other charts (where I am using plain candle sticks). I never had this issue before and as I said it is strangely only occuring for me in today's ES chart after 10:50. I double checked the ressources in my Task Manager and CPU / memory usage don't go up when I am scrolling within this specific chart area so resources don't seem to be an issue here (and I have a very strong computer, so the hardware shouldn't be an issue anyway). I also restarted (twice) and just installed the latest version, but it didn't fix the issue. This problem makes Sierra Chart unsuable for me right now, so no live trading for me during today's session. But any idea what this could be and how I can fix it would be very appreciated, so that I can hopefully trade again tomorrow. Update: Very strange indeed. I just returned to my computer after a short break, and the issue seems to only occur in a very small time period between ca. 10:50 - 11:30. When I scroll to the right and the bars before 11:30 are not visible anymore, the lag is gone and everything works fine again... Date Time Of Last Edit: 2022-10-17 16:17:38
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 Sierra Chart Lagging.png / V - Attached On 2022-10-17 15:32:44 UTC - Size: 179.87 KB - 194 views Sierra Chart Lagging2.png / V - Attached On 2022-10-17 15:32:47 UTC - Size: 139.83 KB - 122 views |
| [2022-10-17 17:16:07] |
| John - SC Support - Posts: 38800 |
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We need to see images from the same chart with the bars before 10:50 (where it is not lagging) and then after 10:50 (where it is lagging).
For the most reliable, advanced, and zero cost futures order routing, use the Teton service: Sierra Chart Teton Futures Order Routing |
| [2022-10-17 19:28:54] |
| MarkusK - Posts: 104 |
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Thanks for your quick reply, John. Please find the requested screenshots numbered 01 - 03 attached where I scrolled from left to right: 01 - This shows the time before 10:50. Nothing is lagging and I can scroll the chart absolutely smoothly in all directions without any issues. 02 - This shows the time after 10:50. The chart is lagging like crazy when I scroll left/right or up/down. The chart is virtually unusable because of the heavy lag. 03 - This shows the time after 11:25. Everything is completely fine again and the lag is gone. The chart is only lagging when any bars from the time period between approximately 10:50 to 11:25 are shown. No lags before or after this time period. I usually use more studies in addition to the Numbers Bars in the chart (as seen in the screenshots attached to the original first post), but I temporarily disabled all of them for testing when I took the screenshots. However, it didn't have any effect, so the lag was still there with only the Numbers Bars Study activated. I never encountered this issue before and it still seems very strange to me that the chart is only lagging within this specific before-mentioned time period. |
| 01 - Before 10_50.png / V - Attached On 2022-10-17 19:25:07 UTC - Size: 107.21 KB - 136 views 02 - After 10_50.png / V - Attached On 2022-10-17 19:25:10 UTC - Size: 119.89 KB - 121 views 03 - After 11_25.png / V - Attached On 2022-10-17 19:25:13 UTC - Size: 127.6 KB - 111 views |
| [2022-10-18 14:47:09] |
| John - SC Support - Posts: 38800 |
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We were hoping that there was an obvious difference in the data at those times, such as extension lines or Volume Profiles, etc. But we do not see anything. Please get us a copy of that chart for us to look into it. Follow these instructions: Support Board Posting Information: Providing Chartbook with Only a Single Chart For the most reliable, advanced, and zero cost futures order routing, use the Teton service: Sierra Chart Teton Futures Order Routing |
| [2022-10-18 18:04:52] |
| MarkusK - Posts: 104 |
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Hi John, I just wanted to follow your instructions and provide you with a copy of the chart. However, for some reason the issue does not occur in the duplicated chart within the newly created chartbook. I have exactly the same chart in two different chartbooks now: and while the issue still exists (and is fully reproducible in the above-mentioned time period) in my old chartbook, it does not occur in the duplicated chart in the newly created chartbook. So, I assume that the cause of the issue is maybe not the chart itself but maybe anything else that is wrong in my specific chartbook? I will try to do some experiments and see if I can somehow replicate the issue in the newly created chartbook by copying all content over one by one. However, in the meantime, if you have any idea would could be the reason for this strange issue or would I should test specifically, any assistance would be greatly appreciated. |
| [2022-10-18 21:10:10] |
| John - SC Support - Posts: 38800 |
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We really do not know. That kind of lag is not completely unusual, but is typically due to a large amount of graphics in that particular part of the chart. We do not see anything in the images that would cause this, which is why we wanted to get the chart from you. If you can attach the entire Chartbook to this thread that shows the problem, then please do so. Chartbooks are not very large, so it is not a problem. If you want to attach it privately so others can not see it, then you can do that as well (there is an option for "Make Private" when you are attaching the file). In the end, though if you can replicate your chartbook and no longer have the issue, then that is the solution. For the most reliable, advanced, and zero cost futures order routing, use the Teton service: Sierra Chart Teton Futures Order Routing |
| [2022-10-19 04:56:06] |
| MarkusK - Posts: 104 |
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Please find the requested chartbook (privately) attached. I removed everything but two charts and have narrowed down the error as far as I could. The chartbook only contains two charts now: The one that is laggy in a small specific time period, and another one that is completely empty (I removed all studies from it). The lagging does not occur anymore when I remove the second (empty) chart, so something seems to be wrong here. But I am unable to figure out what it is. Hopefully you guys are more successful, because I am really curious now (and happy if it helps to fix some strange bug in the software). Lastly a short step-by-step guide on how to reliably replicate the issue: (i) In the chart "Footprint" go to 17.10.2022 at 10:50 am (price was around 3675 at that time). (ii) Scroll to the right - you will immediately notice that the chart is lagging like crazy. (iii) Scroll further to the right - the lag will disappear after approximately 11:30 am and the scrolling becomes completely smooth again after that point in time. (iv) Remove the second chart "50k" from the chartbook and repeat steps (i) - (iii). You will notice that the previously described lag does not occur anymore. |
Private File |
| [2022-10-19 16:09:30] |
| John - SC Support - Posts: 38800 |
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We are not seeing any issue at all with the chartbook. Just continue to move over to the other chartbook where you are not having the issue.
For the most reliable, advanced, and zero cost futures order routing, use the Teton service: Sierra Chart Teton Futures Order Routing |
| [2022-10-20 10:29:47] |
| MarkusK - Posts: 104 |
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Very strange, but thanks a lot for the investigation. I created a new clean chartbook as you suggested and the issue is gone now.
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| [2022-10-21 17:23:18] |
| MarkusK - Posts: 104 |
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Hi John, unfortunately I was wrong - the issue is still there. However, I was mistaken when I initially described the problem: It does not occur within a specific time period, but it is rather related to the currently visible price on the vertical axis. It's lagging when I scrolling through a specific price range. I have created a completely new empty chartbook again and only copied over the problematic chart. I have removed all studies from the chart (so the chart is completely empty now), and the issue still exists: When I scroll up and down, and the price range between approximately 3650 to 3670 (in ES) is visible the chart is lagging like crazy. And it's getting even stranger: When I zoom in into the chart quite a lot, I am unable to scroll down in the chart below the price 3658.25. I can scroll up as much as I want, but the chart doesn't move below the previously mentioned price point. May I kindly ask you to please have a look at the attached chart book and see if you can replicate the issue on your side? It's really driving me crazy because I cannot trade like this since the ES is currently moving in this price range, so I cannot reasonably use the chart for trading right now. |
Private File |
| [2022-10-21 19:00:39] |
| John - SC Support - Posts: 38800 |
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We still are unable to reproduce this issue. Have you rebooted your computer since you started seeing this? Do you have any other programs running that use a lot of resources? Please reboot your computer and just run Sierra Chart after it starts and see if you still see the issue. If you do see the problem, then let us know when would be a good time next week for us to call and connect to your system to see this issue in action. For the most reliable, advanced, and zero cost futures order routing, use the Teton service: Sierra Chart Teton Futures Order Routing |
| [2022-10-22 09:37:40] |
| MarkusK - Posts: 104 |
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Hi John, thanks a lot for taking another look at the issues and for the kind offer to have a call next week. Luckily I was finally able to figure out and solve both issues this morning: Issue #1 (lagging chart in certain price area) was caused by a chart drawing. It was an Extending Rectangle that I drew from right to left (i.e. it was extending to the left rather than to the right). The drawing was already from beginning of October and it was not visible in the chart anymore (since it was extending to the left), so I completely forgot about it. Somehow it caused this severe lag whenever the specific price range in which the rectangle was initially drawn was visible in the chart. By deleting this specific drawing I was able to fully eliminate the lagging in the chart. Issue #2 (unable to scroll down below a certain price) was unrelated to Issue #1 (at first I thought they would be related, but this was not the case). I still don't know what exactly caused this issue, but after I used "Reset Scale" and zoomed in/out on both axes a couple of times, the "lock" disappeared and I am now able to properly scroll in all directions again. So, everything is fine again. However, thanks again for your support. It was really appreciated. |
| [2022-10-24 14:37:35] |
| John - SC Support - Posts: 38800 |
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Excellent. Glad you figured it out.
For the most reliable, advanced, and zero cost futures order routing, use the Teton service: Sierra Chart Teton Futures Order Routing |
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