On slow and low memory computers comodo takes too long to update (about 30 minutes) and makes the computer unusable.
I have an old laptop with Windows XP, athlon XP 2000+ and 512 MB of RAM and for 30 minutes I can’t use it because comodo is updating the virus definitions. Only happens after a long period without updating (like 24H)
In the update process cmdagent.exe gets around 210 MB incidentally hitting 260 MB from what I have seen. To free up memory Windows will move not used program to the pagefile. Not monitoring the paging process is known to work on (older) systems with 512 MB or less RAM memory.