My system has been doing this for a long time and I haven't gotten to troubleshoot it till now. From what I can tell I thought it might be a memory issue, so I'm running memtest but its on its second pass with no errors yet. My only other thought is that the plex error is causing the kernel to crash out.
Feb 4 03:50:40 katahdin kernel: BUG: unable to handle page fault for address: 0000000000080010
Feb 4 03:50:40 katahdin kernel: #PF: supervisor read access in kernel mode
Feb 4 03:50:40 katahdin kernel: #PF: error_code(0x0000) - not-present page
Feb 4 03:50:40 katahdin kernel: PGD 0 P4D 0
Feb 4 03:50:40 katahdin kernel: Oops: 0000 [#1] PREEMPT SMP PTI
Feb 4 03:50:40 katahdin kernel: CPU: 4 PID: 28660 Comm: unraidd3 Tainted: P O 6.1.74-Unraid #1
Feb 4 03:50:40 katahdin kernel: Hardware name: Gigabyte Technology Co., Ltd. Z87X-UD4H/Z87X-UD4H-CF, BIOS F9 03/18/2014
Feb 4 03:50:40 katahdin kernel: RIP: 0010:unraidd+0xfb2/0x1140 [md_mod]
Feb 4 03:50:40 katahdin kernel: Code: c0 01 00 00 31 ed 49 81 c4 08 01 00 00 39 6c 24 30 0f 8e 26 01 00 00 49 8b 56 80 4d 8d 6e 88 31 c0 4d 8b 3c 24 48 85 d2 74 0c <8b> 42 10 25 00 08 02 00 09 44 24 4c f0 49 0f ba b6 68 ff ff ff 0a
Feb 4 03:50:40 katahdin kernel: RSP: 0018:ffffc90001d1fdf0 EFLAGS: 00010206
Feb 4 03:50:40 katahdin kernel: RAX: 0000000000000000 RBX: ffff88815f00c5e8 RCX: 0000000000000000
Feb 4 03:50:40 katahdin kernel: RDX: 0000000000080000 RSI: 0000000000000005 RDI: ffff8883a6335a80
Feb 4 03:50:40 katahdin kernel: RBP: 0000000000000004 R08: 0000000000000000 R09: ffffc90001d1fd58
Feb 4 03:50:40 katahdin kernel: R10: 0000000000000000 R11: ffff888100400068 R12: ffff8881696e4128
Feb 4 03:50:40 katahdin kernel: R13: ffff88815f00c9f0 R14: ffff88815f00ca68 R15: ffff88816965e718
Feb 4 03:50:40 katahdin kernel: FS: 0000000000000000(0000) GS:ffff88884f300000(0000) knlGS:0000000000000000
Feb 4 03:50:40 katahdin kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Feb 4 03:50:40 katahdin kernel: CR2: 0000000000080010 CR3: 000000000420a002 CR4: 00000000001706e0
Feb 4 03:50:40 katahdin kernel: Call Trace:
Feb 4 03:50:40 katahdin kernel: <TASK>
Feb 4 03:50:40 katahdin kernel: ? __die_body+0x1a/0x5c
Feb 4 03:50:40 katahdin kernel: ? page_fault_oops+0x329/0x376
Feb 4 03:50:40 katahdin kernel: ? fixup_exception+0x22/0x24b
Feb 4 03:50:40 katahdin kernel: ? exc_page_fault+0xfb/0x11d
Feb 4 03:50:40 katahdin kernel: ? asm_exc_page_fault+0x22/0x30
Feb 4 03:50:40 katahdin kernel: ? unraidd+0xfb2/0x1140 [md_mod]
Feb 4 03:50:40 katahdin kernel: md_thread+0xf7/0x122 [md_mod]
Feb 4 03:50:40 katahdin kernel: ? _raw_spin_rq_lock_irqsave+0x20/0x20
Feb 4 03:50:40 katahdin kernel: ? signal_pending+0x1d/0x1d [md_mod]
Feb 4 03:50:40 katahdin kernel: kthread+0xe7/0xef
Feb 4 03:50:40 katahdin kernel: ? kthread_complete_and_exit+0x1b/0x1b
Feb 4 03:50:40 katahdin kernel: ret_from_fork+0x22/0x30
Feb 4 03:50:40 katahdin kernel: </TASK>
Feb 4 03:50:40 katahdin kernel: Modules linked in: macvtap macvlan tap nvidia_uvm(PO) xt_connmark xt_mark iptable_mangle xt_comment iptable_raw veth xt_nat xt_tcpudp xt_conntrack nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo xt_addrtype br_netfilter xfs md_mod zfs(PO) zunicode(PO) zzstd(O) zlua(O) zavl(PO) icp(PO) zcommon(PO) znvpair(PO) spl(O) tcp_diag inet_diag it87 hwmon_vid iptable_nat xt_MASQUERADE nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 wireguard curve25519_x86_64 libcurve25519_generic libchacha20poly1305 chacha_x86_64 poly1305_x86_64 ip6_udp_tunnel udp_tunnel libchacha ip6table_filter ip6_tables iptable_filter ip_tables x_tables efivarfs af_packet 8021q garp mrp bridge stp llc bonding tls nvidia_drm(PO) nvidia_modeset(PO) intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel i915 kvm nvidia(PO) crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel sha512_ssse3 sha256_ssse3 sha1_ssse3 aesni_intel iosf_mbi drm_buddy i2c_algo_bit crypto_simd
Feb 4 03:50:40 katahdin kernel: ttm cryptd drm_display_helper rapl mei_hdcp drm_kms_helper mei_pxp i2c_i801 intel_gtt intel_cstate mxm_wmi drm intel_uncore agpgart i2c_smbus mei_me syscopyarea i2c_core ahci sysfillrect input_leds sysimgblt libahci e1000e mei joydev led_class fb_sys_fops thermal fan video wmi backlight button unix
Feb 4 03:50:40 katahdin kernel: CR2: 0000000000080010
syslog (1)