In the new IDE version 1.5 there is still an open well known issue unresolved: an error in rxtxSerial.dll which causes very long (thirty seconds or so) delays on startup and whenever 'Tools' menu is open on any system that has bluetooth or other slow responding virtual COM ports. The issue was wide…

Arduino IDE 1.5 - known issues from 1.0.1 still not resolved

Topic		Replies	Views
Arduino IDE rxtxSerial.dll and Arduino Leonardo IDE 1.x	2	1437	May 5, 2021
Arduino 1.0.2 extremely slow due to rxtxSerial.dll Suggestions for the Arduino Project	2	5277	May 6, 2021
Road to solve the delay on the Arduino IDE Bugs & Suggestions	30	116899	May 6, 2021
R: Road to solve the delay on the Arduino IDE Suggestions for the Arduino Project	14	12217	May 6, 2021
Arduino 1.0.4 IDE problem IDE 1.x	9	3605	May 5, 2021