[Qgis-user] QGIS 3.4.2 still very slow to work in Windows 10

[Nyall Dawson]

On Mon, 17 Dec 2018 at 20:10, Bo Victor Thomsen
<bo.victor.thomsen at gmail.com> wrote:
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> Just my - very late – 2 cents.
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> I have 2 computers that is exactly the same type: Lenovo Thinkpad P50. There is no difference in cpu, memory, SSD or graphics. One is running Windows 7 and one is running Ubuntu 18.04. Both have QGIS 3.4.2 with the same plugins installed.
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> The Linux pc starts QGIS 3.4.2 in just 4 seconds or less. The windows machine is at least 5 times slower starting up. When QGIS is running the Linux pc is slightly faster.
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> The crucial difference is the startup time of the plugins. On the Linux pc you hardly notice the "Restoring loaded plugins" text. However, it takes – forever - on the Windows pc.
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> My guess is that the initialization of the python plugins runs very, very slow on the Windows pc. So the culprit may be the python interpreter on Windows.

This sounds like a known issue since ages (v 2.6?), where at QGIS
startup the Processing plugin parses all the hundreds of description
files for the SAGA/GRASS algorithms. You can verify by disabling the
Processing plugin and relaunching.

Nyall