I will add the suggestion to run "ipconfig /all" on a network wired computer (with lag spikes) and then do the same on a wireless computer that is not having lag spikes.
Run "ipconfig /all" (without quotes) via the Command Prompt and post the results here being sure to identify which computer is wired and which is wireless.
You should be able to copy and post the results of "ipconfig /all" without needing to retype it all.
The "ipconfig /all" comparison results may prove revealing.
I did this on my laptop where the first was connected through wifi then I disabled my wifi and plugged in my LAN adapter and ran it again.
Wireless:
Windows IP Configuration
Host Name . . . . . . . . . . . . : DESKTOP-E6JME7T
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : hsd1.tx.comcast.net
Unknown adapter VPN - VPN Client:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : VPN Client Adapter - VPN
Physical Address. . . . . . . . . : 5E-44-8F-D4-C3-7D
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter Local Area Connection* 3:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter #3
Physical Address. . . . . . . . . : 04-ED-33-C0-2A-F7
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter Local Area Connection* 12:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter #4
Physical Address. . . . . . . . . : 06-ED-33-C0-2A-F6
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter Wi-Fi:
Connection-specific DNS Suffix . : hsd1.tx.comcast.net
Description . . . . . . . . . . . : Killer(R) Wi-Fi 6 AX1650w 160MHz Wireless Network Adapter (200D2W)
Physical Address. . . . . . . . . : 04-ED-33-C0-2A-F6
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2601:2c4:4300:a440::ba36(Preferred)
Lease Obtained. . . . . . . . . . : Monday, May 1, 2023 1:11:58 PM
Lease Expires . . . . . . . . . . : Monday, May 1, 2023 3:11:58 PM
IPv6 Address. . . . . . . . . . . : 2601:2c4:4300:a440:19bd:481b:326d:c630(Preferred)
Temporary IPv6 Address. . . . . . : 2601:2c4:4300:a440:20c2:b4fc:f1a9:d860(Preferred)
Link-local IPv6 Address . . . . . : fe80::1236:150:d83e:98ae%14(Preferred)
IPv4 Address. . . . . . . . . . . : 10.0.0.192(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Monday, May 1, 2023 1:11:57 PM
Lease Expires . . . . . . . . . . : Wednesday, May 3, 2023 1:11:56 PM
Default Gateway . . . . . . . . . : fe80::9a9d:5dff:fe75:3ff7%14
10.0.0.1
DHCP Server . . . . . . . . . . . : 10.0.0.1
DHCPv6 IAID . . . . . . . . . . . : 84208947
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-28-40-32-0E-04-ED-33-C0-2A-F6
DNS Servers . . . . . . . . . . . : 2001:558:feed::1
2001:558:feed::2
75.75.75.75
75.75.76.76
NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Bluetooth Network Connection:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
Physical Address. . . . . . . . . : 04-ED-33-C0-2A-FA
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Wired:
Windows IP Configuration
Host Name . . . . . . . . . . . . : DESKTOP-E6JME7T
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : hsd1.tx.comcast.net
Unknown adapter VPN - VPN Client:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : VPN Client Adapter - VPN
Physical Address. . . . . . . . . : 5E-44-8F-D4-C3-7D
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Ethernet adapter Ethernet:
Connection-specific DNS Suffix . : hsd1.tx.comcast.net
Description . . . . . . . . . . . : Realtek USB GbE Family Controller
Physical Address. . . . . . . . . : 00-E0-4C-68-29-A5
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2601:2c4:4300:a440::1878(Preferred)
Lease Obtained. . . . . . . . . . : Monday, May 1, 2023 1:15:03 PM
Lease Expires . . . . . . . . . . : Monday, May 1, 2023 3:15:03 PM
IPv6 Address. . . . . . . . . . . : 2601:2c4:4300:a440:8ab5:c2c5:f9b0:c7b0(Preferred)
Temporary IPv6 Address. . . . . . : 2601:2c4:4300:a440:d1f:9512:640a:9b8a(Preferred)
Link-local IPv6 Address . . . . . : fe80::1648:503:902b:3ae7%19(Preferred)
IPv4 Address. . . . . . . . . . . : 10.0.0.6(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Monday, May 1, 2023 1:15:02 PM
Lease Expires . . . . . . . . . . : Wednesday, May 3, 2023 1:15:02 PM
Default Gateway . . . . . . . . . : fe80::9a9d:5dff:fe75:3ff7%19
10.0.0.1
DHCP Server . . . . . . . . . . . : 10.0.0.1
DHCPv6 IAID . . . . . . . . . . . : 110683971
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-28-40-32-0E-04-ED-33-C0-2A-F6
DNS Servers . . . . . . . . . . . : 2001:558:feed::1
2001:558:feed::2
75.75.75.75
75.75.76.76
2001:558:feed::1
2001:558:feed::2
NetBIOS over Tcpip. . . . . . . . : Enabled
Wireless LAN adapter Local Area Connection* 3:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter #3
Physical Address. . . . . . . . . : 04-ED-33-C0-2A-F7
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter Local Area Connection* 12:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter #4
Physical Address. . . . . . . . . : 06-ED-33-C0-2A-F6
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter Wi-Fi:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : hsd1.tx.comcast.net
Description . . . . . . . . . . . : Killer(R) Wi-Fi 6 AX1650w 160MHz Wireless Network Adapter (200D2W)
Physical Address. . . . . . . . . : 04-ED-33-C0-2A-F6
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Ethernet adapter Bluetooth Network Connection:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
Physical Address. . . . . . . . . : 04-ED-33-C0-2A-FA
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes