VST plugins stuck at loading

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Hello,

I'm running LMMS 1.1.3 x86_64 on arch linux (64-bit) and I'm trying to load VST plugins. The "loading plugin" window appears, but never finishes (even after hours). WINE is installed. I even tried a different WINE version and even the (probably better) WINE staging. There's no difference.

Kind regards,
BucksEverywhere
is this every vst, or one specific?
Its with every VST. Synth1, GSnap, ... I tested all.
must be a fault in your linux install, that exclude me as fixer :/ - I hope a linux wizard chimes in- If not we will have to provoke one to do so :)
I've tried two computers, both on which arch linux is installed (one is barely used and the other often, so the first one hasn't much more software installed). What exactly does LMMS with WINE do when loading a plugin? I'm a bit involved in WINE development, maybe I can find some hints.

[EDIT]
Ah I didn't notice the terminal output:
WINEDEBUG=+dll lmms
VST sync support disabled in your configuration
fixme:winediag:start_process Wine Staging 1.7.50 is a testing version containing experimental patches.
fixme:winediag:start_process Please report bugs at http://bugs.wine-staging.com (instead of winehq.org).
RemotePluginClient::shmget: Datei oder Verzeichnis nicht gefunden
fixme:ole:RemUnknown_QueryInterface No interface for iid {00000019-0000-0000-c000-000000000046}
Same happened for me.
fixme:winediag:start_process Wine Staging 1.7.51 is a testing version containing experimental patches.
fixme:winediag:start_process Please report bugs at http://bugs.wine-staging.com (instead of winehq.org).
fixme:ole:RemUnknown_QueryInterface No interface for iid {00000019-0000-0000-c000-000000000046}
Have you found the answer?
EDIT:
After few tries i got rid of RemUnknown_QueryInterface. But it doesn't work still. Even with version installed from package (dnf on fedora).
Can we debug it somehow?
I've just found this:

https://www.lmms.io/forum/viewtopic.php ... mget#p7197

But that doesn't help very much. Maybe I'll try compiling LMMS with QT shared memory activated instead of the native shared memory, maybe that'll work, but that might take some weeks, months or years.