My wireless is also unstable. It crashed periodically and my wife is already pissed since the old cheapo router for 50€ was more stable than the Mox Turris (for example - 11 crashed in the last 3 days).
root@turris:/tmp/log# grep crashed messages
Dec 15 16:40:13 turris kernel: [162644.124381] ath10k_pci 0000:00:00.0: firmware crashed! (uuid ab1f8a62-5516-43c8-b4b8-a3ee8a788872)
Dec 15 17:58:19 turris kernel: [167329.777693] ath10k_pci 0000:00:00.0: firmware crashed! (uuid 8dfbd101-3a90-4c45-94ab-ef62b9598a28)
Dec 16 16:58:04 turris kernel: [250107.281984] ath10k_pci 0000:00:00.0: firmware crashed! (uuid e910025f-9285-4440-bdf2-9b9b19cb79f5)
Dec 16 18:56:54 turris kernel: [257236.424288] ath10k_pci 0000:00:00.0: firmware crashed! (uuid 555207d0-93a2-430a-bb25-28d592ef71f1)
Dec 17 08:52:30 turris kernel: [307367.664458] ath10k_pci 0000:00:00.0: firmware crashed! (uuid c7ec2834-9a2b-4a98-a5d3-6ec30aad1d30)
Dec 17 10:50:19 turris kernel: [314436.524051] ath10k_pci 0000:00:00.0: firmware crashed! (uuid 082d8019-b945-4ba4-9b61-0cd7136a9eda)
Dec 17 17:22:40 turris kernel: [337975.369248] ath10k_pci 0000:00:00.0: firmware crashed! (uuid c4d5a8d7-1a5b-4930-b84b-3d179e1f247e)
Dec 17 21:45:51 turris kernel: [353764.857118] ath10k_pci 0000:00:00.0: firmware crashed! (uuid 7dbca7e9-ac83-48fe-a28c-9d731cebbe30)
Dec 18 01:21:04 turris kernel: [366675.976630] ath10k_pci 0000:00:00.0: firmware crashed! (uuid 74437236-9e51-456a-a0a5-1979a0c76fbf)
Dec 18 08:51:57 turris kernel: [393726.579796] ath10k_pci 0000:00:00.0: firmware crashed! (uuid 535d5a92-eaab-4b95-8bf1-27722bb695a6)
Dec 18 20:08:55 turris kernel: [434340.713270] ath10k_pci 0000:00:00.0: firmware crashed! (uuid 0a275d8d-663f-4da4-a2aa-3563e491822a)
Please make this a high priority. A wireless router with unstable wireless connection is like a car without an engine.
Turris Version: 4.0.2
Turris OS branch: hbs
Kernel version: 4.14.156