Today I've installed crDroid and there Bluetooth is not working anyhow, same as on Opt LOS-17.1
It's impossible Bluetooth working in DotOS and not in Optlos and crDroid. It's also impossible to not have lags in incompleted DotOS without any optimization and have lags on Optlos and crDroid.
If you can explain a bit more, what you mean Bluetooth not working (can't connect or what?) and what kind of lags do you have? ?
If you are happy in DotOS it's fine, but I am trying to understand what problems do you have in the most recent ROMs which are more stable than DotOS. The majority of users (include me) don't have these problems.
Make sure you have the latest builds and latest gapps (if you are using) and make clean install by following my guide.