intermittent connections drops daily

I am having the same issue. My ping has went up and stayed up evenly 20ms higher than it was before.
I had my speeds drop download by 200 and upload by 10 and it was never this way before.
Nothing changed on my side of things so I am trying to see why a tech even said it looked clean.
After swapping modems from mine to theirs and back to mine. Changing cables and the ground block.
Nothing has fixed it and coming from someone who LOVES networking, this kinda has me stumped.

I have a suspicion that noise was introduced in the line somewhere. I have gone through my house and tightened up the coax connections. There is only one line inside my house. And nothing has changed one my end.

I am another drop at almost exactly 12:00am. I am monitoring my internet connection via the Chrome extension and I am not noticing any small periodic drops. but I still get the big drop that doesn't come back without a reset. this is my modems status right after I hard reset it.

I also discovered a coax barrel connecter( I think that is what it is called. it is like a coupler joining extending the cable) but nothing looks corroded or loose.

I went outside to the box on the side of the house and can't see anything obviously out of place. 

I will go ahead and post the event log 

I input this info into an AI just out of curiosity. It suggested I add a splitter to reduce power. I did that and the power did go down to 0-6db. I am gonna keep that plugged in and see if I get the big drop. I spoke too soon on the small drops I noticed those are still there. I have a tech coming on Monday. 

Hey there, user_ktimqc! Thanks for posting on our XFINITY Community forum. I know how important it is to stay connected at all times especially during gaming sessions. Rest assured, our team is here to help! We will dig deeper into this matter to check the signal levels on this end as well. 
Please send our team a direct message with your full name, the name listed on the account (if different), and the service address associated with your account. 
To send a Direct Message, please click on the “Direct Message” icon in the top-right corner of the screen, next to the bell icon, click the "New message" (pencil and paper) icon, then type or select "Xfinity Support". Type your message in the text area near the bottom of the window and press Enter to send your message and initiate a live session.  

@user_ktimqc @XfinityNatalie 

Please circle back here and post any possible solutions for the issue here in these open public forums so that all readers here may benefit from the exchange / info. This is in keeping with the spirit for which these public help forums were originally intended. Thank you.

I have DMed the Xfinity support as suggested. Waiting for a response. In the meantime I will wait for the tech on Monday and report back with an update.