Both snapstore and github downloads are not available anymore. It appears that the flatpak too suffers from the problem.
amnesia@amnesia:~$ top -b | head
top - 15:56:38 up 9:23, 1 user, load average: 0.16, 0.34, 0.16
Tasks: 224 total, 1 running, 222 sleeping, 0 stopped, 1 zombie
%Cpu(s): 0.0 us, 3.0 sy, 3.0 ni, 93.9 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
MiB Mem : 3779.7 total, 273.7 free, 1980.9 used, 1525.0 buff/cache
MiB Swap: 7875.5 total, 7567.0 free, 308.5 used. 1407.2 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1827 amnesia 26 6 173280 7552 6784 S 6.2 0.2 0:00.15 ibus-en+
6483 amnesia 26 6 22912 4096 3328 R 6.2 0.1 0:00.01 top
1 root 20 0 166712 11348 7892 S 0.0 0.3 0:01.62 systemd
amnesia@amnesia:~$ sudo -shx ~i2pd/[pn][e]*
sudo: unable to resolve host x: Temporary failure in name resolution
[sudo] password for amnesia:
/bin/bash: line 1: ~i2pd/[pn][e]*: No such file or directory
amnesia@amnesia:~$
I will try to troubleshoot further to see if it has to do with NetworkManager or some other OS thing. Currently my suspicion is the router 60%. Check also the reviews from the snapstore. I have older routers that are running fine at 60% tunnel building so I do not suspect any general attack.