Slow transfer speed to local NAS on PC1 and normal transfer speeds on PC2

Hello everyone, I am desperate at this point to try and find out what is happening! Basically I have a WD NAS (EX4100) where the normal local transfer speeds over the network are arround 100Mb/s, wich all my pcs archived up to this point. After changing my motherboard a couple of days ago the speeds on my main PC, the one with the MOBO swap droped to 30Mb/s, like they are capped. This happened straight after installing windows without me even instaling anything on the PC! The other one still transfers at normals speeds but this one acts like its limited! It’s worth mentioning that downloads from the web are normal go up to the 100Mb/s wich are ok acording to my ISP and the nVMe is in perfect working conditions. I have tried everyhting at this point, different drivers, switching over to wifi… if you think it, I have tried it!

My question is, what could possibly be causing this? Hardware, in this case the MOBO swap? or Software, windows or the NAS?

Thank you!

Hi @pedro639

Have you opened a Support Case? If not opened, for more information, please contact the WD Technical Support team for the best assistance and troubleshooting:

Hi @kumburle.pradeep

I opened a support ticket ad well, waiting for a reply.