Support Board
Date/Time: Wed, 19 Nov 2025 00:22:10 +0000
Simple Replay of Multiple Charts on a High End PC lags in Accurate Trading System Mode
View Count: 23
| [2025-11-18 16:58:00] |
| skalaydzhiyski - Posts: 100 |
|
Hi SC, I am trying to use the All Charts in ChartBook option for replaying 2 charts in Accurate Trading System Replay Mode, my setup is the following: Charts to Replay = All Charts in ChartBook Number of Charts = 2 Spped = 5 Mode = Accurate Trading System Back Test Mode (or Calculate Same As Real Time) Processing Step in Seconds = 0.015 Chart Update Interval (for both charts) = 15ms Data Storage Format = 1 tick Charts Setup = clean chart (candlesticks) with NO studies whatsoever. OpenGL = enabled Use Compatible OpenGL profile = enabled My PC Specs are below: CPU = Processor Intel(R) Core(TM) Ultra 7 265K, 3900 Mhz, 20 Core(s), 20 Logical Processor(s) RAM = 64GB GPU = NVIDIA GeForce RTX 4060 Ti 16GB OS = Windows 11 64bit I understand there shold be a performance hit due to the syncing of the charts, but I am surprised because I don't see any increase in resource consumption (neither in my GPU nor my CPU) when running the replay with 2 charts and yet the replay is lagging like hell. If I switch to Standard replay both charts work fine and everything is smooth. Another thing I have tried before is the following: 1. Simple ACSIL study that iterates over all my charts and does sc.StartChartReplay() - with this I have been able to replay up to 10 charts with speed 1000 each, each having chart update interval 15 ms and they all run buttery smooth ! That is why I don't think it's a problem with my machine. https://www.youtube.com/watch?v=Dx8wQLe5gwc&t=35s Also I have seen the above video in youtube and have tried to replicate this exact setup and my replay is lagging even though in the video it looks very smooth. My version of Sierra is 2798. Any help is welcome, I really don't think I should be seeing the lag with my configuration (after all I built my PC specifically so that it can run Sierra as a power user) and this has been driving me crazy... |
| [2025-11-18 21:22:07] |
| skalaydzhiyski - Posts: 100 |
|
Hi SC, I just tried another example which is even weirder... Please see below: 1. I have a SINGLE chart with ES loaded with data for 2 days (Continious Contract Back Adjusted Volume Based Rollover) 2. I select Accurate Trading System back test mode 3. I select All Charts in ChartBook 4. I select speed of 5 5. I select processsing speed in seconds to 0.01 6. Run After this I still see the replay lagging, even though I just have 1 chart! If I switch back to Single Chart everything is ultra fast and smooth. I have Tried both disabling OS Timers and enabling Sierra Timer Management to battle this, but nothing seems to work... I really need to sync multiple charts and I know other people have done and I know I have enough compute to do it, I just don't seem to be able to get the settings right. Let me know if anything in my experiments above sounds obviously silly. All the best |
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