Can you verify in the solver output ( just a few lines down from the beginning as shown below , whether distributed computing is still being used? Also delete all the files (file.*) in the directory before resolving.
***** MAPDL COMMAND LINE ARGUMENTS *****
BATCH MODE REQUESTED (-b) = NOLIST
INPUT FILE COPY MODE (-c) = COPY
DISTRIBUTED MEMORY PARALLEL REQUESTED
4 PARALLEL PROCESSES REQUESTED WITH SINGLE THREAD PER PROCESS
TOTAL OF 4 CORES REQUESTED
INPUT FILE NAME = D:\Support 2022\SR 11298948814 rad decimation\_ProjectScratch\Scr8D4F\dummy.dat
OUTPUT FILE NAME = D:\Support 2022\SR 11298948814 rad decimation\_ProjectScratch\Scr8D4F\solve.out
START-UP FILE MODE = NOREAD
STOP FILE MODE = NOREAD