linux - CRON starts to skipping to the next minute

I am setting up single minute crons to the crontab via a bash script for a load testing purpose. There is no issue with the script executing and the crons are added up and i can monitor crons are being executed via the /var/log/cron.

But the issue is when I informed the script the other day to 106 crons it added and they were executed nicely. But today I reset the crontab from scratch and I only able to set up 85 crons.Then it starts to say

crond[31243]: (root) INFO (Job execution of per-minute job scheduled for 08:32 delayed into subsequent minute 08:33. Skipping job run.)

and eventually all the crons will started to get skipped and nothing will get executed. But initial conclusion I had was 106 is the maximum value that can be st up on this server. But today it got reduced to 85. Server configurations weren't changed;same environmnet as it when it was 106

Is this because of the setting up crons too frequently or something else. I'm new to cron and its workings. Please help

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