securert scrollback or display line slow than xshell

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hello
as the title,i found a problem about the securecrt,when we use the same command on CentOS 7 via SecureCRT and Xshell

systemctl list-unit-files | grep enabled

xxxxx or some the other commands
you will find SecureCRT display line will be a little suck than Xshell


2 software are all newest

hope developer can repead this problem and resolv it.