Open a command prompt and run the following command:
netsh interface tcp show global
Then, can you run the following two commands:
C:\WINDOWS\system32>netsh int tcp set global rss=enabled
C:\WINDOWS\system32>netsh int tcp set global autotuninglevel=normal
Close out your browsers and repeat the upload to TUFv2.0. The two above commands enable TCP to dynamically increase the Receive Windows buffers.