Looking for help... VLAN speed?

Hey r/networking,

I'm a lone sys admin at my office and that also encompasses our networking equipment. I've run into a bit of an issue that I've been digging through documentation to attempt to figure out but am coming up dry.

We've got a pair of Netgear M7100-24X switches that are being used to move data between two clusters of servers and two SANs. These are currently serving as stand-in units while we wait on new switches to be ordered, but in the mean time I've noticed something weird. All of the ports are showing at 1000 Full Duplex, but the VLAN they're a member of is showing up at 10 Half Duplex. As a result of this, data transfer is painfully slow, and it's something that I need to get resolved fairly quickly. Here's the status from the switches:

(M7100-24X) #show interfaces status all Link Physical Physical Media Flow Control Port Name State Mode Status Type Status --------- ---------------------------- ------ ---------- ---------- ------------------ ------------ 0/1 Up Auto 1000 Full Copper Inactive 0/2 Up Auto 1000 Full Copper Inactive 0/3 Up Auto 1000 Full Copper Inactive 0/4 Up Auto 1000 Full Copper Inactive 0/5 Up Auto 1000 Full Copper Inactive 0/6 Up Auto 1000 Full Copper Inactive 0/7 Up Auto 1000 Full Copper Inactive 0/8 Up Auto 1000 Full Copper Inactive 0/9 Up Auto 1000 Full Copper Inactive 0/10 Up Auto 1000 Full Copper Inactive 0/11 Up Auto 1000 Full Copper Inactive 0/12 Up Auto 1000 Full Copper Inactive 0/13 Down Auto Inactive 0/14 Down Auto Inactive 0/15 Down Auto Inactive 0/16 Down Auto Inactive 0/17 Up Auto 10G Full Copper Inactive 0/18 Up Auto 10G Full Copper Inactive 0/19 Up Auto 10G Full Copper Inactive 0/20 Up Auto 10G Full Copper Inactive 0/21 Up 10G Full 10G Full DAC Inactive 0/22 Up 10G Full 10G Full DAC Inactive 0/23 Up 10G Full 10G Full DAC Inactive 0/24 Up 10G Full 10G Full DAC Inactive lag 1 Up lag 2 Down lag 3 Down lag 4 Down lag 5 Down lag 6 Down lag 7 Down lag 8 Down lag 9 Down lag 10 Down lag 11 Down lag 12 Down lag 13 Down lag 14 Down lag 15 Down lag 16 Down lag 17 Down lag 18 Down lag 19 Down lag 20 Down lag 21 Down lag 22 Down lag 23 Down lag 24 Down vlan 1 Up 10 Half 10 Half Unknown (M7100-24X) # 

...and the second switch is identical:

(M7100-24X) #show interfaces status all Link Physical Physical Media Flow Control Port Name State Mode Status Type Status --------- ---------------------------- ------ ---------- ---------- ------------------ ------------ 0/1 Up Auto 1000 Full Copper Inactive 0/2 Up Auto 1000 Full Copper Inactive 0/3 Up Auto 1000 Full Copper Inactive 0/4 Up Auto 1000 Full Copper Inactive 0/5 Up Auto 1000 Full Copper Inactive 0/6 Up Auto 1000 Full Copper Inactive 0/7 Up Auto 1000 Full Copper Inactive 0/8 Up Auto 1000 Full Copper Inactive 0/9 Up Auto 1000 Full Copper Inactive 0/10 Up Auto 1000 Full Copper Inactive 0/11 Up Auto 1000 Full Copper Inactive 0/12 Up Auto 1000 Full Copper Inactive 0/13 Down Auto Inactive 0/14 Down Auto Inactive 0/15 Down Auto Inactive 0/16 Down Auto Inactive 0/17 Up Auto 10G Full Copper Inactive 0/18 Up Auto 10G Full Copper Inactive 0/19 Up Auto 10G Full Copper Inactive 0/20 Up Auto 10G Full Copper Inactive 0/21 Up 10G Full 10G Full DAC Inactive 0/22 Up 10G Full 10G Full DAC Inactive 0/23 Up 10G Full 10G Full DAC Inactive 0/24 Up 10G Full 10G Full DAC Inactive lag 1 Up lag 2 Down lag 3 Down lag 4 Down lag 5 Down lag 6 Down lag 7 Down lag 8 Down lag 9 Down lag 10 Down lag 11 Down lag 12 Down lag 13 Down lag 14 Down lag 15 Down lag 16 Down lag 17 Down lag 18 Down lag 19 Down lag 20 Down lag 21 Down lag 22 Down lag 23 Down lag 24 Down vlan 1 Up 10 Half 10 Half Unknown (M7100-24X) # 

I've been digging through the 600+ page Netgear CLI manual, and see that setting interface speed is a very straight forward process, but the way to set the interface speed for your normal interfaces isn't an option when you go into interface vlan 1.

Apologies if this is a very straight forward answer that I'm just missing (I think I see a networking home lab in my immediate future), but can anyone offer some insight into this for me? Thank you!