Haha, just after I ordered 10 new Sense-boards 
Anyway, they should work good enough when I see your results.
Testing now and will get back asap.
Really thankful for your work @msfujino !
Ok, after some testing, everything stayed the same or got worse. I commented out (removed) the lines 127 and 128, and I also had to remove the 2nd delay (basically only leaving “connection->requestConnectionParameter(6);” as a change), because otherwise my 2 peripherals would not connect with my one central (you remember @msfujino ? 
), but the disconnects happen around the same distance as before, no matter what I try.