What tank, exactly do you think is to fast for you? The IS2? The KV1? Or the Tiger? Because neither of those tanks can go as fast as medium tanks can, and they all reach the same speed mediums do slower.
I'm very in favor in making mediums faster, what I am NOT in favor of is making heavies slower unless they get a buff to health or armor.
The KT can afford to be only slightly faster than infantry because it has a butt load of armor and health, the IS2 cannot afford to max out at walking speed.
It doesn't matter as both IS-2 and Tiger can catch up to mediums and destroy them before they will get out of range if there isn't AT gun wall discouraging chase.
And since I'm literally arguing a brick wall here, this is where I stop, I made my point, just because this bullet doesn't penetrate your thick skull and gets to you doesn't mean its not accurate, exactly the same with you arguing MarcoRossolini.
And last but not least, making mediums faster=easier infantry crushing. Want that? Slower heavies? God forbids you would be punished for overextending!