Unable to Upload Large Files over WiFI

That's not the issue.   The issue is getting files uploaded to those services.   How can I share a link if I can't upload the file?

There's not a heat issue with the processor.    This is my work laptop so there's not anything going on that would cause consistent significant CPU usage.  The only things running are Outlook, Teams, Edge and all the necessary background processes and the CPU shows about 25% utilization.   The CPU is a single socket Intel Core i7 with 14 cores.  I use Core Temp to monitor the temperatures and across the board, they are all hovering around 40 degrees Celsius.  After shutting down everything other than Core Temp and all the background processes, the CPU is now below 10% utilization.  I then tried to upload a 10GB file to my company's internal SFTP site and it failed after only transferring less than 1% of the file with a network error.    Temps for all the cores stayed below 45 and CPU utilization never got above 10%. 

I'm certain this is an issue with xfinity.  I have seen too many posts in this forum with others having the same issue.   I was travelling last week and was able to do this same upload successfully using both my hotel's wi-fi and the wi-fi at a colleague's home (not an xfinity customer).     

Hi - 

Thanks for your reply.   I did have advanced security turned on.   Once I turned it off and restarted my laptop, I tried an upload and, while the upload did progress further than before, it did ultimately fail.   Previously, I did not see any security errors when uploads fail.   

This is my work laptop so there are quite a few background processes they require for internal security, etc. plus the normal ones for Windows, networking, etc.  

I've checked for corrupted software and drivers but nothing there.   

A reminder that this only happens at home when I am connected to the XB8 gateway.   I was out of town last week and tried uploads over two different networks where I was signed on as a guest and both times they completed without issue.  I uploaded the same file to the same site (an AWS S3 bucket) those two times as well as on today's attempt.     

An update.   After restarting my gateway, I am happy to report some partial success.  I am now able to upload files up to 600MG without issue.   However, attempts to upload anything larger fails with the same sort of error (I simply get some sort of generic network failure message).    The majority of the uploads I need to do will be in the 500MB to 1.5GB range.    So, while the solution provided has helped, it is not a complete resolution to my problem.