SecureLine VPN for Mac made connection unusably slow

Hi,
I installed a trial Avast SecureLine VPN on my iMac out of curiosity - the popup was annoying me. It immediately started disconnecting and connecting to the internet, and made my connection line noticeably slower. I don’t need VPN anyway so I disconnected it after a couple of days. The speed and stability did not improve even after I did an Uninstall.

Now, my connection is completely unusable. It is so slow that most of the pages time out before I can connect to it. Occasionally, it catches a connection at the usual speed for a few moments and then goes to practically nothing. The connection was completely stable and fast before. If I do a speed-check it comes between 2 and 5 Mbps or there is none. 0Mbps on the upload. I can’t send any emails!!!

Since I constantly upload and download graphics for work from home, I am desperate to find out what is going on.
It is the same on all my computers - iMac (Mojave), MacAir (Maverick), iPad

Thank you

https://forum.avast.com/index.php?board=5.0

Not sure what you mean with this link??? It takes me to the front page of Avast forum.

I would really like to get a reply as I uninstalled and installed the Avast security itself, which has to some extent solved the speed of line BUT it continues to DISCONNECT randomly and OFTEN.

Thank you for the help.

It should have taken you to the Avast Mac Security sub-forum, see attached image.

Though I’m not entirely sure if this the right place to go relating to SecureLine VPN, that would be the Avast SecureLine VPN for Mac sub-forum, https://forum.avast.com/index.php?board=81.0.