For a few days now I'm struggling with my network connection issues. When I
boot the system and log in, my connection works for like a ~30 seconds or so.

After that period, even if it says that I'm connected to the internet (via
nmcli and other such tools), I can't use it. Firefox doesn't load any webpages,
zypper won't sync repos, I can't even ping a website.

My wireless chip is Qualcomm Atheros QCA6174 using the ath10k driver. It was
working really well before. If I restart the NetworkManager.service, my network
connection just disappears. Sometimes after booting my network isn't being
detected. Reboot fixes this.

After reinstalling the system (via Tumbleweed ISO from March 26th) and updating
it, the network connection works until I reboot it again. Then it does the
things, I have described above. I tried using different kernels, like the one
that will be in Leap 15.2 (5.3.18), but same thing happens, which is weird,
because my network connection on openSUSE Leap 15.2 Beta works fine.

I don't know, if this info will be useful, but my network adapter isn't being
detected by Tumbleweed installation ISOs, I think the last one that worked was
from 9th March 2020. Leap 15.2 Beta installation ISOs are working fine. And
here is the output of dmesg on all three kernels that I tested.

Kernel from "home_geekositalia_kernel_openSUSE-15.2" repo.
kris@openSUSE:~> uname -a
Linux openSUSE 5.3.18-55-default #1 SMP Wed Apr 8 13:04:43 UTC 2020 (a52aaa2)
x86_64 x86_64 x86_64 GNU/Linux
kris@openSUSE:~> dmesg|grep ath10k
[    4.763866] ath10k_pci 0000:01:00.0: pci irq msi oper_irq_mode 2 irq_mode 0
reset_mode 0
[    5.084647] ath10k_pci 0000:01:00.0: qca6174 hw3.2 target 0x05030000 chip_id
0x00340aff sub 11ad:0807
[    5.084652] ath10k_pci 0000:01:00.0: kconfig debug 0 debugfs 0 tracing 0 dfs
0 testmode 0
[    5.085121] ath10k_pci 0000:01:00.0: firmware ver
WLAN.RM.4.4.1-00140-QCARMSWPZ-1 api 6 features wowlan,ignore-otp,mfp crc32
29eb8ca1
[    5.149203] ath10k_pci 0000:01:00.0: board_file api 2 bmi_id N/A crc32
4ac0889b
[    5.221915] ath10k_pci 0000:01:00.0: unsupported HTC service id: 1536
[    5.241298] ath10k_pci 0000:01:00.0: htt-ver 3.60 wmi-op 4 htt-op 3 cal otp
max-sta 32 raw 0 hwcrypto 1
[    5.342146] ath10k_pci 0000:01:00.0 wlp1s0: renamed from wlan0
[    5.643408] ath10k_pci 0000:01:00.0: unsupported HTC service id: 1536
[    6.031219] ath10k_pci 0000:01:00.0: unsupported HTC service id: 1536
kris@openSUSE:~>

Latest official kernel on Tumbleweed.
kris@openSUSE:~> uname -a
Linux openSUSE 5.6.2-1-default #1 SMP Thu Apr 2 06:31:32 UTC 2020 (c8170d6)
x86_64 x86_64 x86_64 GNU/Linux
kris@openSUSE:~> dmesg|grep ath10k
[    4.572029] ath10k_pci 0000:01:00.0: pci irq msi oper_irq_mode 2 irq_mode 0
reset_mode 0
[    4.905492] ath10k_pci 0000:01:00.0: qca6174 hw3.2 target 0x05030000 chip_id
0x00340aff sub 11ad:0807
[    4.905496] ath10k_pci 0000:01:00.0: kconfig debug 0 debugfs 0 tracing 0 dfs
0 testmode 0
[    4.906014] ath10k_pci 0000:01:00.0: firmware ver
WLAN.RM.4.4.1-00140-QCARMSWPZ-1 api 6 features wowlan,ignore-otp,mfp crc32
29eb8ca1
[    4.970370] ath10k_pci 0000:01:00.0: board_file api 2 bmi_id N/A crc32
4ac0889b
[    5.070056] ath10k_pci 0000:01:00.0: htt-ver 3.60 wmi-op 4 htt-op 3 cal otp
max-sta 32 raw 0 hwcrypto 1
[    5.170346] ath10k_pci 0000:01:00.0 wlp1s0: renamed from wlan0
kris@openSUSE:~> 

Newest kernel from "Kernel_stable" repo.
kris@openSUSE:~> uname -a
Linux openSUSE 5.6.3-2.g5b340fd-default #1 SMP Thu Apr 9 13:45:36 UTC 2020
(5b340fd) x86_64 x86_64 x86_64 GNU/Linux
kris@openSUSE:~> dmesg|grep ath10k
[    4.765423] ath10k_pci 0000:01:00.0: pci irq msi oper_irq_mode 2 irq_mode 0
reset_mode 0
[    5.085201] ath10k_pci 0000:01:00.0: qca6174 hw3.2 target 0x05030000 chip_id
0x00340aff sub 11ad:0807
[    5.085210] ath10k_pci 0000:01:00.0: kconfig debug 0 debugfs 0 tracing 0 dfs
0 testmode 0
[    5.086224] ath10k_pci 0000:01:00.0: firmware ver
WLAN.RM.4.4.1-00140-QCARMSWPZ-1 api 6 features wowlan,ignore-otp,mfp crc32
29eb8ca1
[    5.150535] ath10k_pci 0000:01:00.0: board_file api 2 bmi_id N/A crc32
4ac0889b
[    5.242573] ath10k_pci 0000:01:00.0: htt-ver 3.60 wmi-op 4 htt-op 3 cal otp
max-sta 32 raw 0 hwcrypto 1
[    5.347421] ath10k_pci 0000:01:00.0 wlp1s0: renamed from wlan0
kris@openSUSE:~> 

Someone has an idea, what could be wrong here? Sorry, if my explanation is a
bit messy, I'm not really very proficient in network-related stuff. What other
info I need to provide?
Thank You.