Kibana 6.2.4 on Windows hangs & fails during plugin installation: "Optimizing and caching browser bundles"

On Windows, I execute this:
J:\elastic\kibana>bin\kibana-plugin.bat install x-pack

After about 15 minutes, I get this error
Transferring 4942599 bytes....................
Transfer complete
Retrieving metadata from plugin archive
Extracting plugin archive
Extraction complete
Optimizing and caching browser bundles... <--Stalls here for a long time

<--- Last few GCs --->

 6705195 ms: Mark-sweep 5773.7 (8037.4) -> 5773.7 (8037.4) MB, 15320.1 / 0.0 ms [allocation failure] [scavenge might not succeed].
 6720227 ms: Mark-sweep 5773.7 (8037.4) -> 5773.7 (8037.4) MB, 15030.3 / 0.0 ms [allocation failure] [scavenge might not succeed].
 6735706 ms: Mark-sweep 5773.7 (8037.4) -> 5790.5 (8020.4) MB, 15476.5 / 0.0 ms [last resort gc].
 6750836 ms: Mark-sweep 5790.5 (8020.4) -> 5808.1 (8019.4) MB, 15129.0 / 0.0 ms [last resort gc].


<--- JS stacktrace --->

FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory

I have executed this command before running the kibana-plugin.bat file:
set NODE_OPTIONS=--max-old-space-size=4096

But still get the same error.

How can this be fixed?

Interesting. Fifteen minutes is quite a long time. The optimizer usually completes in less than a minute, but of course it is dependent on your machine's capabilities.

How much RAM does the machine in question have?

One other thing I should note is that x-pack comes bundled in 6.3 (which should come out in 8 days or so). So, you should be able to bypass the install step and that might get you up and working without necessary tinkering.

Thanks for the tip, but this optimization step happens with the install of every plugin, not just x-pack.
It hangs for every plugin.

The machine has 32GB of RAM and SSD. It performs very well of all other aspects.

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