MultiMC 0.6.2 Launch Times slow

[kvgeorge1]

System Information

MultiMC version: 0.6.2

Operating System: Mojave (MacOS)

Summary of the issue or suggestion:

When launching from the command line - MultiMC launches normally. Launching from the Desktop is about a 45 second or so wait for launch to happen and locks up the entire machine during this time

What should happen:

It should launch normally

Steps to reproduce the issue (Add more if needed):

1. Install Mojave

2. Java 1.8.0.191

Suspected cause:

Java and/or MultiMC compiled wrong???

Logs/Screenshots:

Additional Info:

[peterix]

Or Mojave is plain buggy. If the OS locks up while loading a tiny application like this ...

No idea.

[kvgeorge1]

Not totally wrong either. However, as I mentioned - starting this directly in a terminal using /Applications/MultiMC/Content/MacOS/MultiMC does not experience the same problem, only when starting this by double-clicking the icon to start it.

[kvgeorge1]

UPDATE: I am thinking this is specific to MultiMC alone.

When launching an instance - the same thing occurs, but only if I launched using the icon to start up MultiMC (this doesn't happen if I use the CLI to start MultiMC as previously mentioned). However, this behavior is NOT experienced if using the MC Launcher from Mojang.

Seeing this in the CLI when I launch my instance:

4.153 W QCoreApplication::postEvent: Unexpected null receiver

[kvgeorge1]

Did some more research and discovered something that may help. IF I am in the terminal window of my Mac and do "open -a /Applications/MultiMC.app" I get the same exact behavior I get when I launch the application using the ICON. Still get "normal" behavior if I use "/Application/MultiMC.app/Content/MacOS/MultiMC"

[Goretantath]

MultiMc is being super slow for me as-well, though i'm on win10 64bit and my system doesn't lock but everything gets slowed down A-LOT when i open it, also any action i do in MultiMc causes the same amount of lag until finally opening up the new window etc. I'm going to try to learn how to use cmd to open it since i didn't know that was possible and see if its fine like it was for you, If i don't edit this it most likely means cmd didnt help, otherwise i'l post my findings. Nvrmind, apparently it's known about - https://workflowy.com/s/2EyDMcp7CU

Possible huge slowdowns / lockups when opening 'edit instance' for certain instances #bug
https://u.nya.is/biwbdl.zip
Log reload is SLOW #bug
https://www.youtube.com/watch?v=DOh_Rxg6Dd0&feature=youtu.be
Something must be done about this
Mod scanning needs to use a cache
Test on Windows?

Though "Possible" is a word I'd delete from that sentence..

[peterix]

@Goretantath that is entirely unrelated.

[EmanuelMairoll]

@kvgeorge1 Well, can relate.

However, this issue happens for me since (if I recall correctly) High Sierra. Also it seems related application size, if you delete instances the delay decreases quite a bit. I just moved my instances-folder somewhere else and symlinked it, no issue anymore.

[phit]

Duplicate of #2529