We ran the tests again. Below are the keys for each test. The screen resolution, number of monitors, and OS scaling was the same.
Working - enabled advanced grid after sign in
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Configs]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Configs\Standard computer arrangement]
"2, 3"="10.4.7.248"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\ConfigsNew]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\HotKeys]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Machines]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Machines\10.4.7.248]
"OnlyVideoMode"="0"
"InternalOnly"="0"
"Name"="10.4.7.248"
"DisplayName"="10.4.7.248"
"WakeOnLan"="0"
"MACAddress"="01-00-5e-00-00-16"
"Address"="10.4.7.248"
"DynamicIP"="0"
"PasskeyEnc"="vTnUdvJPxYLHeLy0BihGlg==
"
"RemoteMonitorCount"="1"
"RemoteVDLeft"="0"
"RemoteVDTop"="0"
"RemoteVDRight"="1920"
"RemoteVDBottom"="1080"
"RemoteScale1"="1000"
"RemoteMonLeft1"="0"
"RemoteMonTop1"="0"
"RemoteMonRight1"="1920"
"RemoteMonBottom1"="1080"
"LastWorking"="10.4.7.248"
"LastScreenWidth"="1920"
"LastScreenHeight"="1080"
"RemoteScale2"="1000"
"RemoteMonLeft2"="0"
"RemoteMonTop2"="-1080"
"RemoteMonRight2"="1920"
"RemoteMonBottom2"="0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\MP]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\MP\MP]
"STOP"="0"
"InitialSetupDoneV4"="1"
"Primary"="1"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Multiplicity.ini]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Multiplicity.ini\Multiplicity]
"GroupKeyEnc"="NX5hY3G4DO7gJlfE6Ncy8w==
"
"UIDEnc"="vpkwFBeUkp7o7gMgVAjOdg==
"
"RDISPUIDEnc"="vpkwFBeUkp7o7gMgVAjOdg==
"
"AllowShareOurMonitors"="0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\RemoteDisplay]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\RemoteDisplay\Machines]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\GridConfig]
"2, 3"="10.4.7.248"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\GridConfigNew]
@="-1915|-1440|0"
"10.4.7.248"="-1920|-8|0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\GridConfigNew\Grid]
"Exist"="1"
"X"="60"
"Y"="44"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\GridConfigNew\Scaling]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\Seamless]
"VelSwitch"="0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Security]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Security\Ports]
"AllowSub"="0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\UI]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\UI\GRID]
"ConfigVersion"="48"
"ConfigType"="1"
"EnableSeamless"="1"
"GridZoom"="67"
Not Working - After sign out and sign back in with same user
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Configs]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Configs\Standard computer arrangement]
"2, 3"="10.4.7.248"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\ConfigsNew]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\HotKeys]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Machines]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Machines\10.4.7.248]
"OnlyVideoMode"="0"
"InternalOnly"="0"
"Name"="10.4.7.248"
"DisplayName"="10.4.7.248"
"WakeOnLan"="0"
"MACAddress"="01-00-5e-00-00-16"
"Address"="10.4.7.248"
"DynamicIP"="0"
"PasskeyEnc"="vTnUdvJPxYLHeLy0BihGlg==
"
"RemoteMonitorCount"="1"
"RemoteVDLeft"="0"
"RemoteVDTop"="0"
"RemoteVDRight"="1920"
"RemoteVDBottom"="1080"
"RemoteScale1"="1000"
"RemoteMonLeft1"="0"
"RemoteMonTop1"="0"
"RemoteMonRight1"="1920"
"RemoteMonBottom1"="1080"
"LastWorking"="10.4.7.248"
"LastScreenWidth"="1920"
"LastScreenHeight"="1080"
"RemoteScale2"="1000"
"RemoteMonLeft2"="0"
"RemoteMonTop2"="-1080"
"RemoteMonRight2"="1920"
"RemoteMonBottom2"="0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\MP]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\MP\MP]
"STOP"="0"
"InitialSetupDoneV4"="1"
"Primary"="1"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Multiplicity.ini]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Multiplicity.ini\Multiplicity]
"GroupKeyEnc"="NX5hY3G4DO7gJlfE6Ncy8w==
"
"UIDEnc"="vpkwFBeUkp7o7gMgVAjOdg==
"
"RDISPUIDEnc"="vpkwFBeUkp7o7gMgVAjOdg==
"
"AllowShareOurMonitors"="0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\RemoteDisplay]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\RemoteDisplay\Machines]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\GridConfig]
"2, 3"="10.4.7.248"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\GridConfigNew]
@="-1915|-1440|0"
"10.4.7.248"="-1920|-8|0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\GridConfigNew\Grid]
"Exist"="1"
"X"="60"
"Y"="44"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\GridConfigNew\Scaling]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\Seamless]
"VelSwitch"="0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Security]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Security\Ports]
"AllowSub"="0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\UI]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\UI\GRID]
"ConfigVersion"="48"
"ConfigType"="1"
"EnableSeamless"="1"
"GridZoom"="67"
Working again - After moving the machine on the grid (same user)
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Configs]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Configs\Standard computer arrangement]
"2, 3"="10.4.7.248"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\ConfigsNew]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\HotKeys]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Machines]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Machines\10.4.7.248]
"OnlyVideoMode"="0"
"InternalOnly"="0"
"Name"="10.4.7.248"
"DisplayName"="10.4.7.248"
"WakeOnLan"="0"
"MACAddress"="01-00-5e-00-00-16"
"Address"="10.4.7.248"
"DynamicIP"="0"
"PasskeyEnc"="vTnUdvJPxYLHeLy0BihGlg==
"
"RemoteMonitorCount"="1"
"RemoteVDLeft"="0"
"RemoteVDTop"="0"
"RemoteVDRight"="1920"
"RemoteVDBottom"="1080"
"RemoteScale1"="1000"
"RemoteMonLeft1"="0"
"RemoteMonTop1"="0"
"RemoteMonRight1"="1920"
"RemoteMonBottom1"="1080"
"LastWorking"="10.4.7.248"
"LastScreenWidth"="1920"
"LastScreenHeight"="1080"
"RemoteScale2"="1000"
"RemoteMonLeft2"="0"
"RemoteMonTop2"="-1080"
"RemoteMonRight2"="1920"
"RemoteMonBottom2"="0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\MP]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\MP\MP]
"STOP"="0"
"InitialSetupDoneV4"="1"
"Primary"="1"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Multiplicity.ini]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Multiplicity.ini\Multiplicity]
"GroupKeyEnc"="NX5hY3G4DO7gJlfE6Ncy8w==
"
"UIDEnc"="vpkwFBeUkp7o7gMgVAjOdg==
"
"RDISPUIDEnc"="vpkwFBeUkp7o7gMgVAjOdg==
"
"AllowShareOurMonitors"="0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\RemoteDisplay]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\RemoteDisplay\Machines]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\GridConfig]
"2, 3"="10.4.7.248"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\GridConfigNew]
@="-1915|-1440|0"
"10.4.7.248"="-1920|-8|0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\GridConfigNew\Grid]
"Exist"="1"
"X"="60"
"Y"="44"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\GridConfigNew\Scaling]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\Seamless]
"VelSwitch"="0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Security]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Security\Ports]
"AllowSub"="0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\UI]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\UI\GRID]
"ConfigVersion"="49"
"ConfigType"="1"
"EnableSeamless"="1"
"GridZoom"="67"
Not Working - Different User
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Configs]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Configs\Standard computer arrangement]
"2, 3"="10.4.7.248"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\ConfigsNew]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\HotKeys]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Machines]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Machines\10.4.7.248]
"OnlyVideoMode"="0"
"InternalOnly"="0"
"Name"="10.4.7.248"
"DisplayName"="10.4.7.248"
"WakeOnLan"="0"
"MACAddress"="01-00-5e-00-00-16"
"Address"="10.4.7.248"
"DynamicIP"="0"
"PasskeyEnc"="vTnUdvJPxYLHeLy0BihGlg==
"
"RemoteMonitorCount"="1"
"RemoteVDLeft"="0"
"RemoteVDTop"="0"
"RemoteVDRight"="1920"
"RemoteVDBottom"="1080"
"RemoteScale1"="1000"
"RemoteMonLeft1"="0"
"RemoteMonTop1"="0"
"RemoteMonRight1"="1920"
"RemoteMonBottom1"="1080"
"LastWorking"="10.4.7.248"
"LastScreenWidth"="1920"
"LastScreenHeight"="1080"
"RemoteScale2"="1000"
"RemoteMonLeft2"="0"
"RemoteMonTop2"="-1080"
"RemoteMonRight2"="1920"
"RemoteMonBottom2"="0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\MP]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\MP\MP]
"STOP"="0"
"InitialSetupDoneV4"="1"
"Primary"="1"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Multiplicity.ini]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Multiplicity.ini\Multiplicity]
"GroupKeyEnc"="NX5hY3G4DO7gJlfE6Ncy8w==
"
"UIDEnc"="vpkwFBeUkp7o7gMgVAjOdg==
"
"RDISPUIDEnc"="vpkwFBeUkp7o7gMgVAjOdg==
"
"AllowShareOurMonitors"="0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\RemoteDisplay]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\RemoteDisplay\Machines]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\GridConfig]
"2, 3"="10.4.7.248"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\GridConfigNew]
@="-1915|-1440|0"
"10.4.7.248"="-1920|-8|0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\GridConfigNew\Grid]
"Exist"="1"
"X"="60"
"Y"="44"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\GridConfigNew\Scaling]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Seamless\Seamless]
"VelSwitch"="0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Security]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\Security\Ports]
"AllowSub"="0"
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\UI]
[HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Stardock\Multiplicity2\UI\GRID]
"ConfigVersion"="49"
"ConfigType"="1"
"EnableSeamless"="1"
"GridZoom"="67"