Circulating your pool should be done for specific reasons - mixing chemicals, skimming, running your cleaner system. If the current times you have scheduled are keeping your pool clean and fresh - then that should be fine. While additional circulation does not affect anything - other than energy costs - you can schedule more time. For instance - I always like the pool circulating when people are in the pool.
Note - if you had a SWCG - you may need to run your pump longer to get the desired output for chlorine but since you are using LC, then you just really only need to mix the water after adding.
Always run your pump for minimum 30 minutes after any chemical additions.
Are you doing your testing and chemical additions in the morning when the pump is running?