USB C fast charges, then drops to super low power.

[A.Hruskach]

I have a Razer Blade Advanced 2020 Edition and both USB C ports seem to charge really slow... One port is Thunderbolt, other is at least USB 3.0, likely 3.1. It all started when I used a partially damaged thunderbolt cable to charge my phone and my pone said fast charging at first, then says charging, 5 hours until charged... I'm assuming my cable may have shorted out some USB components. Is there a way to see if its actually damaged? No windows errors or logs point to any issues, and gigabit data + low speed charging works as it should... just not as much current. Im not certain, but I think I had a popup error when it first happened mentioning a USB Malfunction, but nothing ever since.