Why the Chart Can Feel Slow, and How to Fix It

We work on performance every week, and recently made several built-in indicators and Bar Replay noticeably faster. Still, some slowness comes from things outside the platform itself: your device, your browser, your network, or what is on your chart. Here are the most common causes we've seen in real reports, and how to check each one.

Quick test first

Create a new, empty layout and use it for a minute.

• Smooth? The cause is in your old layout: indicators, drawings or the number of charts. Go through points 1–4 below.
• Still slow? It's the device, the browser or the network. Go through points 5–8.

1. Heavy indicators

Every indicator is recalculated on every price tick. Some are much heavier than others, especially community indicators from the Marketplace, which are written by other authors and run exactly as they wrote them.

→ Hide or remove your indicators one at a time. If the chart becomes smooth after one of them, you've found the cause.

2. Too many live charts at once

A layout with 3 or 6 charts on the 1-minute timeframe does 3 to 6 times the work of a single chart, on every tick.

→ Close the charts you don't need, or use a higher timeframe on some of them.

3. A lot of drawings on one symbol

Hundreds of drawings on the same symbol all have to be drawn again every time the chart moves.

→ Delete old drawings you no longer use, or click Hide Drawings on the left toolbar.

4. Scrolling very far back on small timeframes

Scrolling months back on 1m loads tens of thousands of candles, and every indicator recalculates over all of them on every tick.

→ Press F5 to reload, and use a higher timeframe to browse far history.

5. Your device and browser

Weaker computers and phones feel it first.

→ Turn off battery saver / low power mode. On a laptop, keep it plugged in. → Use Chrome or Firefox, and keep hardware acceleration turned on in the browser settings. → Close other chart tabs: each tab receives prices and recalculates on its own.

6. Network at peak hours

During busy evening hours in some regions, your connection may be routed through a network point farther away, so loading chart data and live prices can take longer than usual. This affects how fast data loads, not how smoothly the chart moves or draws.

7. After sleep or a network change

If your computer went to sleep or switched Wi-Fi, live prices may stop updating.

→ Press F5.

8. Some brokers have no live prices

A few brokers (for example IC Markets) provide price history only. Their price updates when you reload, not tick by tick. That isn't lag. If you need live ticks, pick a broker with live data, such as OANDA or Pepperstone.

Still slow?

Send us a message with your device, your browser, and the symbol and timeframe you use. We read every report, and several of the improvements above came straight from them.