So I have had issues for my internet this past month. It randomly disconnects and Windows says the default gateway is not available when I run the diagnostics. After some time it clears up and I am able to continue surfing. But I have been able to isolate the cause: This happens only when I download large files at maximum speed, like 40 GB file via Steam. After a while, those crashes become frequent, with gateway being available and unavailable intermittently. But when I pause the download and let it sit for few minutes no internet disconnection happens for a long time, if I use the internet "casualy" (email, youtube, news etc, no heavy load). And I noticed it happens mostly through day, at night I can download to my heart content.
Should I contact my ISP to explain themselves why they purposely gimp my internet connection? It is "no monthly download limit" plan, so they have no reason to throttle me.