Processor information is missing on 3DMark Home screen
If you see the error message, "Your CPU does not support SSSE 3" when trying to run Time Spy or Night Raid and your processor information is missing from the 3DMark Home screen, the problem is caused by the Vanguard anti-cheat software that is packaged with Valorant from Riot Games.
To fix this issue, disable Vanguard and restart 3DMark.
Processor information is visible on 3DMark Home screen
If you can see your processor information on the 3DMark Home screen, then your CPU is probably an older model that does not support the SSSE 3 instruction set that is required to run the Time Spy and Night Raid benchmarks.