Setting realtime priority does not improve performance at all if there are no other processes running at the same time. Simply don't run other active processes at the same time (idle processes are ok) and your program will get 100% of CPU, regardless of its priority. Also, setting realtime priority won't help even if there are some background processes running at the same time, if there are enough CPU cores to handle all of them.
I think angiemailo was just spamming anyways. I had to report them for replying to several threads with just reposting what others had said previously in the thread. I found three threads where they just reposted parts of what I said verbatim and left it as their reply. I considered it just posting to be posting (spam) at that point, especially after 12 posts of doing it because they used to have 23 posts before their account was locked.