Windows docker:can't run correctly with 7 same docker containers

I have a .exe application which can only run on windows containers. The requirement is each exe should run on an individual machine. So I created many containers, the problem came out when I increased the number of container to 7 or even more(6 containers can run well), some of the containers can’t run correctly. There some way I have tried, expand the memeory, shut down and remove other containers, but all with no use. This confused me a lot, I really don’t know which aspect caused this problem, hoping someone can light up my mind. thx.

The machine description like this,

32G memory
1T harddrive
R7 3700X cpu

The memory of the real machine increased about 400M for one container added, and cpu seems affect a little.