iMessage problem with saving

[mets3214]

I'm having a weird problem on my MacBook Pro. I think it started to happen much more frequently after I installed Sierra. iMessages will not save properly in Library/Messages and a conversation will only show my outgoing messages with no incoming messages for some time (usually a couple of hours). I use the application Chatology to easily see the messages stored but I can confirm it's also like that when I see them through the finder. This just happened with a conversation I was having today with a contact, messages from 4pm-6pm from this contact were not saved but my outgoing messages to her were. But if I scroll up to that time in Messages, it's all there in perfect order. I can't scroll up to check messages from a week ago with someone I contact frequently. I notice this happens often when I text on my phone and come back to my laptop later and let it update. How can I fix this irritating problem?