id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
16434	Delayed line drawing/slow JOSM	jumat@…	team	"I have already opened a ticket concerning this problem, see [https://josm.openstreetmap.de/ticket/16260#comment:45 here] a couple of weeks before. This was closed.
Under the current version of JOSM (13878) basicly the same problem, that is described there, occurs. The delay, when drawing lines and setting a point is getting worse the longer I'am working with JOSM. Especially, after uploading the data to OSM the performance goes down.
In the [https://forum.openstreetmap.org/viewtopic.php?pid=705177#p705177 Austrian OSM forum] several user have observed the same under various platforms (Mac, Windows, Linux) - I have observed it under Mac and Windows. 

==== What steps will reproduce the problem?
1. download an aera of approx. 10x10km
2. draw lines, tag them up to approx. 800-1200 revised/created objects 
3. upload them
4. draw and revise another 500 objects, upload them
5. every time I'am uploading the data, JOSM became slower. The delay of line drawing becomes visible.

==== What is the expected result?
To get JOSM working faster and reduce the delay in line drawing effectively and permanent.

==== What happens instead?

==== Please provide any additional information below. Attach a screenshot if possible.

{{{
URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2018-05-31 00:51:20 +0200 (Thu, 31 May 2018)
Build-Date:2018-05-30 22:58:01
Revision:13878
Relative:URL: ^/trunk

Identification: JOSM/1.5 (13878 de) Mac OS X 10.13.5
OS Build number: Mac OS X 10.13.5 (17F77)
Memory Usage: 1182 MB / 2731 MB (910 MB allocated, but free)
Java version: 1.8.0_171-b11, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: Display 441084945 2560x1080
Maximum Screen Size: 2560x1080
VM arguments: [-Djava.library.path=/private/var/folders/mq/zwtfhdb533d13ylzfqpbjrfc0000gn/T/AppTranslocation/2A85D6F4-30C3-48C0-888E-E45DDABB49D4/d/JOSM.app/Contents/MacOS, -DLibraryDirectory=${HOME}/Library, -DDocumentsDirectory=${HOME}/Documents, -DApplicationSupportDirectory=${HOME}/Library/Application Support, -DCachesDirectory=${HOME}/Library/Caches, -DSandboxEnabled=false, -Dapple.laf.useScreenMenuBar=true, -Dcom.apple.macos.use-file-dialog-packages=true, -Dcom.apple.macos.useScreenMenuBar=true, -Dcom.apple.mrj.application.apple.menu.about.name=JOSM, -Dcom.apple.smallTabs=true]
Dataset consistency test: No problems found

Plugins:
+ austriaaddresshelper (1525848529)
+ buildings_tools (34212)
+ continuosDownload (68)
+ contourmerge (1032)
+ editgpx (34109)
+ utilsplugin2 (34221)

Map paint styles:
+ https://pasharm.github.io/New_basic_style_for_JOSM/New_basic_style.mapcss

Last errors/warnings:
- W: Unable to convert property color to type class java.awt.Color: found # of type class java.lang.String!
- W: Unable to convert property color to type class java.awt.Color: found # of type class java.lang.String!
- W: Unable to convert property color to type class java.awt.Color: found # of type class java.lang.String!
- W: Unable to convert property color to type class java.awt.Color: found # of type class java.lang.String!
- W: Unable to convert property color to type class java.awt.Color: found # of type class java.lang.String!
- W: Unable to convert property color to type class java.awt.Color: found # of type class java.lang.String!
- W: Unable to convert property color to type class java.awt.Color: found # of type class java.lang.String!
- W: Unable to convert property color to type class java.awt.Color: found # of type class java.lang.String!
- W: Unable to convert property color to type class java.awt.Color: found # of type class java.lang.String!
- W: Unable to convert property color to type class java.awt.Color: found # of type class java.lang.String!
}}}
"	defect	new	normal		Core			performance upload	michael2402