Comment 1 for bug 1825268

130k nets? Waauw!
I have a pretty slow 11 year old PC myself and don't blame KiCad for performance issues. It gets a bit laggy when viewing the Olimexino 64 (example project on Kicad site / github) and it would not be fun to design such a board on my PC though.

Just curious: What kind of hardware do you put in a PC to design such boards?

I have noticed 2 things that infuence performance significantly:
- If the 3D viewer is open, it's constantly updated (which is good) but this makes things slow.

- Sometimes KiCad seems to change from "Modern Toolset (accellerated) [F11] to "Fallback [F12]" which makes things slow. I assume it does this when it encounteres some openGL problem.

On my V5.1 I also sometimes get "assertion failed" messages, and from what I know of programming keeping track of assertions slow programs down and are usually disabled in release versions.

Application: pcbnew
Version: 5.1.0+dfsg1-1, release build
Libraries:
    wxWidgets 3.0.4
    libcurl/7.64.0 OpenSSL/1.1.1b zlib/1.2.11 libidn2/2.0.5 libpsl/0.20.2 (+libidn2/2.0.5) libssh2/1.8.0 nghttp2/1.36.0 librtmp/2.3
Platform: Linux 4.19.0-4-amd64 x86_64, 64 bit, Little endian, wxGTK
Build Info:
    wxWidgets: 3.0.4 (wchar_t,wx containers,compatible with 2.8) GTK+ 3.24
    Boost: 1.67.0
    OpenCASCADE Community Edition: 6.9.1
    Curl: 7.64.0
    Compiler: Clang 7.0.1 with C++ ABI 1002

Build settings:
    USE_WX_GRAPHICS_CONTEXT=OFF
    USE_WX_OVERLAY=ON
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_PYTHON3=ON
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_WXPYTHON_PHOENIX=ON
    KICAD_SCRIPTING_ACTION_MENU=ON
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_USE_OCC=OFF
    KICAD_SPICE=ON