@freak
Hello!
Try to use wintun (another driver for tun-like virtual network interfaces) as you might have a bottleneck caused by the TAP driver. Eddie 2.19.6 for Windows is packaged with OpenVPN 2.5 and they both support wintun, you can enable it with a click.
See here to download Eddie 2.19.6: https://airvpn.org/forums/topic/46329-eddie-desktop-219beta-released/
Kind regards