Are you still using "15 - 25 - 45 -95 - 115 - 180 - 285 - 500 - 900 " on cTrader?
Approximately - yes
I have just downloaded another updated ctrader platform on a new computer with window's 8.1 operating system - and changes again.
For now new settings at 10 - 16 - 27 - 60 - 80 - 105 - 240 - 300 - 450 - slighty quicker but only had 2 days to find out how they perform.
All brokers platforms will perform differently according to your computer set up etc etc - thats what i have found over last 7 years - but never heard anyone else mention it - so whether its the inaccuracy of indicators or what I dont know.
I think it best to test slightly different setting to fit your style.
I have adapted faster settings because I have been using then so long - if you are not after quick scalps - you might want to slow them down slightly to slower than original etc
You will know when they are right - check them over a busy few days and also on at least 3 different FX pairs. When you get them agreeing in time windows to change - then you are on the right track