I fixed the MUDEC_00045 problem by opening the Adapter Settings which resulted in my RTT in FFXIV to go from ~235 to ~125. I’m just curious if there is a permanent solution to this problem because it’s going to be annoying having to open the Adapter Settings every time I launch Mudfish just to fix the auto-configuration.
You can open “Task Manager” too to solve this issue. 
I think it’s a lot more easier… And check the MUDEC_00045 link too.
Thanks for the Task Manager advice, helps a lot :). But I tried all the other suggestions under the link and the only one that worked was the adapter one (and now the Task Manager one)
Yep… However as you guess, it’s not a bug of Mudfish. I guess it’s a bug of Windows 10 because Mudfish doesn’t have this issue at Windows 7 before.