Internet cable up to 500 Mbit/s or DSL up to 250 Mbit/s?

My current DSL internet package offers me data transfer speeds of up to 250 Mbps. I'm satisfied with the speed and stability. I'm moving into a new apartment soon. My landlord is offering me a cable internet package with a speed of up to 500 Mbps. From what I've learned, cable internet speeds fluctuate considerably….

Download speed keeps dropping despite “good” internet?

Good morning, I have a Gigacube and currently receive between 170 and 230 Mbps. However, while downloading on my PC, the download rate repeatedly drops to 2 Mbps, even though the speed test shows 170-230 Mbps. Afterward, it briefly rises back to 130-190 Mbps, but only briefly. I've already restarted the computer and the Gigacube…