This is what I get:
>> System freezes after gdb is connected to kwin.

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(gdb) continue
Continuing.

>> System freezes when trying to change Aurorae theme. Ctrl-C doesn't do a thing - gdb is frozen as well.

In another terminal:

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$ ping 192.168.1.3
PING 192.168.1.3 (192.168.1.3) 56(84) bytes of data.
64 bytes from 192.168.1.3: icmp_seq=1 ttl=64 time=0.426 ms
64 bytes from 192.168.1.3: icmp_seq=2 ttl=64 time=0.287 ms
64 bytes from 192.168.1.3: icmp_seq=3 ttl=64 time=0.755 ms
64 bytes from 192.168.1.3: icmp_seq=4 ttl=64 time=0.435 ms
64 bytes from 192.168.1.3: icmp_seq=5 ttl=64 time=0.398 ms
64 bytes from 192.168.1.3: icmp_seq=6 ttl=64 time=0.764 ms
64 bytes from 192.168.1.3: icmp_seq=7 ttl=64 time=0.827 ms
^C
--- 192.168.1.3 ping statistics ---
7 packets transmitted, 7 received, 0% packet loss, time 5998ms
rtt min/avg/max/mdev = 0.287/0.556/0.827/0.201 ms

So, pinging the frozen machine is no problem.

Does "htop" in a SSH session freeze as well when you change the Aurorae theme?

We eventually gave up on Aurorae.
samriggs, the original poster is looking into alternative approaches the the problem.
I want to thank you all for your time, and effort.