Having only 1GB on a fast system is likely to hamper said fast computer to start with as you end up with more swapping in and out of memory to the pagefile.sys.

The mbamservice.exe can get a bit a bit of a resource hog at times, this shows the three mbam services in mbam pro, there is one more service mbam.exe also dives in when you open the the mbam GUI, so collectively it uses a lot of ram.

So you have to be careful on the collective number of programs that you use and close them when not in use and I’m not talking about security based programs here. You can now probably see that 1GB of RAM isn’t very much.