Number of allowed signals and indicators in only 1 expert in MetaTrader 4

Hello dear friends

I want to know how many signals and indicators to enter into a trade in an expert that Meta Trader 4 can easily process.

I mean only in one expert

Thank You
Indicators are limited by your available RAM.
William Roeder:
Indicators are limited by your available RAM.

I have 20,000 strategies that I MERGE and each of them has 2 to 5 indicators

Does this number of trading strategies that have become an expert cause a mistake in my work?