I download about 300GB monthly in big months and it’s always perfectly fine and router has uptimes of months, but when I start uploading a few gigabytes of data via FTP or via vSphere, the router usually crashes after a while, pretty much always before 2GB is uploaded.
I am not 100% sure if it’s the router that crashes, because when I disable and re-enable my network connection, the internet connection works perfectly fine again.