If I open libreoffice in my "user" session, the start is very very slow.
[code]
$ time strace -f /opt/libreoffice6.4/program/soffice.bin --calc 2>&1 | grep ftp
[pid  6275] sendmsg(10, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\1\0\1\36\0\0\0\20\0\0\0w\0\0\0\1\1o\0\23\0\0\0/modules"..., iov_len=136}, {iov_base="\31\0\0\0ftp://ftp.libreoffice.org\0", iov_len=30}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 166
[pid  6275] sendmsg(10, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="l\1\0\1\36\0\0\0\25\0\0\0w\0\0\0\1\1o\0\23\0\0\0/modules"..., iov_len=136}, {iov_base="\31\0\0\0ftp://ftp.libreoffice.org\0", iov_len=30}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 166


real    3m51,841s
user    0m21,659s
sys     0m29,406s
[/code]

Yep, 3 minutes, 51 seconds.... But in "root":
[code]
# time strace -f /opt/libreoffice6.4/program/soffice.bin --calc 2>&1 | grep ftp

real    0m2,906s
user    0m1,291s
sys     0m0,578s
[/code]

Only 2 seconds.

I tried with "disable updates" and "disable java" but nothing.
Also removing the "cache" and "config" folder (in my home) but nothing.

Also I see a similar bug:
https://bugzilla.opensuse.org/show_bug.cgi?id=1144361

But I think mine is different, because the time is excessively longer.

< More info >
[Help information]
Versión: 6.4.4.2
Id. de compilación: 3d775be2011f3886db32dfd395a6a6d1ca2630ff
Subprocs. CPU: 12; SO: Linux 5.6; Repres. IU: predet.; VCL: kf5; 
Configuración regional: es-PE (es_PE.UTF-8); Idioma de IU: es-ES
Calc: threaded


# cat /etc/*ease
NAME="openSUSE Tumbleweed"
# VERSION="20200331"
ID="opensuse-tumbleweed"
ID_LIKE="opensuse suse"
VERSION_ID="20200331"
PRETTY_NAME="openSUSE Tumbleweed"
ANSI_COLOR="0;32"
CPE_NAME="cpe:/o:opensuse:tumbleweed:20200331"
BUG_REPORT_URL="https://bugs.opensuse.org"
HOME_URL="https://www.opensuse.org/"
LOGO="distributor-logo"


# rpm -qa | grep libreoffice
libobasis6.4-libreofficekit-data-6.4.4.2-2.x86_64
libreoffice6.4-base-6.4.4.2-2.x86_64
libreoffice6.4-math-6.4.4.2-2.x86_64
libreoffice6.4-calc-6.4.4.2-2.x86_64
libreoffice6.4-dict-es-6.4.4.2-2.x86_64
libreoffice6.4-es-6.4.4.2-2.x86_64
libreoffice6.4-ure-6.4.4.2-2.x86_64
libreoffice6.4-6.4.4.2-2.x86_64
libreoffice6.4-draw-6.4.4.2-2.x86_64
libreoffice6.4-freedesktop-menus-6.4.4-2.noarch
libreoffice6.4-dict-en-6.4.4.2-2.x86_64
libreoffice6.4-dict-fr-6.4.4.2-2.x86_64
libreoffice6.4-impress-6.4.4.2-2.x86_64
libreoffice6.4-writer-6.4.4.2-2.x86_64
libreoffice6.4-en-US-6.4.4.2-2.x86_64