Extremely slow upload speeds

I'm currently experiencing issues with my service where my upload and sometimes download speeds slow down considerably or drop all together. I did some research and I believe my problems are similiar to this customer. 

 

https://forums.xfinity.com/t5/Your-Home-Network/Extremely-slow-upload-speeds/td-p/3059871

 

I'm in the same situation where I work from home and am unable to video conference, call or screen share. My issue only seems to appear during business hours Monday-Friday, all other times my service works great and I have no problems. Infact I can pretty much count on services returning at 6pm. 

 

I've had technicians out a few times now and they have been unable to assist me. My desktop is hard wired and the modem/wiring at my residence is the same I've used as my last two. 

 

The log from my modem appears to pickup when the server drops/slows. 

 

 

Edit: Not sure why but my attached photos aren't displaying. You can also view them from this link.

https://imgur.com/a/f5eIlXy