Problems with benchmark

[damien]

Instead of using only uppercase, I have changed my keyspace into a:
Session..........: hashcat
Status...........: Running
Hash.Name........: NTLM
Hash.Target......: [REDACTED]
Time.Started.....: Mon Jul 12 19:15:43 2021 (4 mins, 27 secs)
Time.Estimated...: Wed Jul 14 02:30:50 2021 (1 day, 7 hours)
Kernel.Feature...: Pure Kernel
Guess.Mask.......: ?a?a?a?a?a?a?a?a [8]
Guess.Queue......: 1/1 (100.00%)
Speed.#1.........: 19722.6 MH/s (9.16ms) @ Accel:32 Loops:128 Thr:1024 Vec:1
Speed.#2.........: 19481.8 MH/s (9.26ms) @ Accel:32 Loops:128 Thr:1024 Vec:1
Speed.#3.........: 19762.2 MH/s (9.08ms) @ Accel:32 Loops:128 Thr:1024 Vec:1
Speed.#*.........: 58966.6 MH/s
Recovered........: 0/1 (0.00%) Digests
Progress.........: 15779800809472/6634204312890625 (0.24%)
Rejected.........: 0/15779800809472 (0.00%)
Restore.Point....: 15073280/7737809375 (0.19%)
Restore.Sub.#1...: Salt:0 Amplifier:73216-73344 Iteration:0-128
Restore.Sub.#2...: Salt:0 Amplifier:25472-25600 Iteration:0-64
Restore.Sub.#3...: Salt:0 Amplifier:81536-81664 Iteration:0-128
Candidate.Engine.: Device Generator
Candidates.#1....: .dg"$F34 -> cbuGaT78
Candidates.#2....: r)sBMj45 -> T/o2pxrd
Candidates.#3....: 506zclve -> YUI`h^an
Hardware.Mon.#1..: Temp: 64c Fan: 73% Util: 94% Core:1932MHz Mem:6794MHz Bus:1
Hardware.Mon.#2..: Temp: 60c Fan: 64% Util: 93% Core:1906MHz Mem:6794MHz Bus:1
Hardware.Mon.#3..: Temp: 65c Fan: 75% Util: 93% Core:1949MHz Mem:6794MHz Bus:1


The 'real' speed is still the same. Even when I add -w 3 or 4, it is only 62000 M, so why don't I get the full speed of 212 G ?