Ninjatrader Performance Tips

METHOD 1 — DELETE (RESET) DATABASE​

Purpose: Fix chart delay, wrong timestamps, missing ticks, slow chart loading

What This Clears​

• Historical price data (tick/min/day)
• Corrupt or mismatched instrument data
• Market replay remnants

What It Does NOT Affect​

• Indicators
• Strategies
• Workspaces
• Accounts
• License

Steps (SAFE METHOD)​

1. Close NinjaTrader completely
2. Go to:
   Documents\NinjaTrader 8\
3. Delete "db" folder
4. Start NinjaTrader
5. Open charts and allow historical data to reload

When to Use​

• 1–5 minute chart delay
• Bars loading slowly
• Charts “catching up”
• Used Tick Replay or Market Replay before

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METHOD 2 — CLEAR CACHE (Soft Method)​

Purpose: Fix UI lag, freezing, slow indicators, graphical glitches​

What This Clears​

• Compiled indicator cache
• UI rendering cache
• Temporary NinjaTrader files

What It Does NOT Affect​

• Historical data
• Indicators
• Workspaces
• Strategies

Steps​

1. Close NinjaTrader completely
2. Go to:
   Documents\NinjaTrader 8\db
3. Delete "Cache" folder
4. Start NinjaTrader
5. Restart NinjaTrader

When to Use​

• Platform feels slow
• Indicators load slowly
• Chart scrolling is laggy
• No actual timestamp delay, just performance issues

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