Hi, when using the same broker data input any differences are probably due to different coding of the EA, for MT4 there must be hundreds of EAs and some are really badly coded but nothing to stop anyone having a go which is fine so testing is important.
My broker doesn't do MT5 so have never tried any MT5 Renko charts, see zip file below with a selection of MT4 Renko chart builders which I know to be pretty reasonable.
I use the Evolution builder EA with the median setting (50%), it's very stable even during explosive price action.
Tick data is also problematic on MT4 (not sure about MT5). For forex there is no central exchange so a large broker's data is used instead. A tick is supposed to be one lot swapped through an exchange but while each trade is registered by MT4 the size (number of lots) is not, so there is nothing to distinguish between large orders and small ones.
Research has shown though that there is correlation between size of trades and numbers of trades. And yes all the data is coming from the brokers 1 minute chart (always best to use the lowest time frame).
Would be interesting to see if there are any major differences between MT4 and MT5.
Best of Luck.
